devoid

Here’s a good piece  of article on how to write character flaws.
 

And this reason is why Mary Sue stories makes poor writing.
Most of the time, Mary Sue writers get too intent to pile awesomeness upon awesomeness for their Sues to "shine" more that the narrative suffers. Instead of an engaging story, we get is a list of cool things that the character has done. And considering how anything can happen in the fictional world, this list of amazing feats fail to impress.
The presence of Mary Sues are especially irritating in fanfics because they frequently warp the universe of an existing fandom to an unrecognizable form. In other words, they invade the fandom.
People who read fanfics come in with certain hopes/expectations of the settings, rules, and characters - but in Mary Sue stories, all of this would have been changed. Instead of seeing our favorite characters in action, we see them abandon their personality and goals that made us like them in favor of an Original Characters we don't know, let alone emphasize with. We came for entertainment, but we are forced to see someone else's shopping list instead.

Here’s a good piece  of article on how to write character flaws.
 

Here’s a good piece  of article on how to write character flaws.
 

Just keep in mind that no matter what, if you dare to write a character even slightly OOC then you're pretty much guaranteed to get at least one insanely rabid fan wanting to jump down your throat and rip out your spleen, regardless of how well you justify your actions. Now ask me why I write original stories and not fanfic.

i have seen many stories where a character is way ooc but its never explained and i think thats the real issue.
if you just start to write a fanfic on anything and don't explain the changes in the universe that would effect the character, then most would think that its going to be based on canon data, but as a writer you have no obligation to do that and it could be too much useless information that means nothing.
example:
canon version
Bob is an elite knight from ..... some mystical kingdom and holds a strong standing of honor and loyalty to his king.
fanfic version
Bob found his king in bed with his wife/girlfriend and became enraged, turning his back on the kingdom forever, he became dark and twisted into a black knight.
in that little quick thing i made we have an explanation of the change in story.
but really like many will tell you, its your story and you can do anything you like.

I think I can sympathize. Ideas for Frozen fanfics keep on popping in my head despite not actually liking the movie (or any of the characters).

Some cartoons just have that effect. Like when I saw Watership Down and had bunny plot bunnies.

Not only is your idea possible, but highly likely if the woman has not learned how to desensitize herself to overcome the trauma of her past. The escaped woman would be paralyzed by her past when facing her previous master without warning, especially if she hears trigger words or phrases, or sees items that she could not defend against during captivity. Post Traumatic Stress tends to blind a person to the now they are standing within, and their brain misfires so they believe they are in a much different place and time where they cannot fight back in many cases. The sight of a specific item can also cause the same extreme reaction that throws the person mentally into another time mentally when they were completely unable to protect their lives and bodies. Smells can also cause the same thing to happen. I've heard of combat vets returning from war who flip out over smelling burned gun powder used in fireworks. They think they are back in a full blown war zone without any way to escape mentally so long as the smell of gunpowder is present. If you learn about PTSD, you'll find many different triggers to choose between and utilize unfortunately.
Hearing repeated phrases from a period of extreme vulnerability/defenselessness before learning how to defend herself would throw her mentally back into that period before she learned to be strong and to defend herself. I survived abuse in my marriage when I was younger. My family rescued me and my infant son. they had to make sure that as the divorce proceeded, the beast could not see me without their presence. His words and smell caused flashbacks to happen to me with my ex until I found a way to break my responses to said triggers, and heal from the past so I did not have hard flashbacks that blinded me completely any longer. Abusers love to repeat certain types of phrases as a rule, so I could totally see the scenario playing out that you suggest. The hardest part of any healing is simply learning what the trigger phrases and words were so the victim can fight the habit of losing consciousness of where they actually are at that point. Desensitizing is difficult, but it can be done. Hope that helps you out somewhat.

I am doing a bit of condensing to take up less space. Here is the first worksheet. Feel free to copy it and use it all you want. I got it free from a pro writing site, and have used it for over a decade personally.
Character Developing Worksheet
NAME:
RACE:
GENDER:
CITY OF BIRTH: STATE: COUNTY: COUNTRY:
BIRTH DATE: CURRENT AGE:
NICK NAMES:
PHYSICAL STATISTICS
HEIGHT: WEIGHT:
BODY TYPE: NECK: SHOULDERS: ARMS: HANDS:
BREASTS/CHEST:
BELLY & WAIST:
LEGS & HIPS:
VOICE:
FACE & EYES: HAIR COLOR & STYLE:
Habitual Expressions:
PERCEIVED PHYSICAL IMPERFECTIONS MINIMUM OF 3
DISTINGUISHING FEATURES/ MINIMUM OF 3:
CLOTHING STYLES & FAVORITE OUTFITS; MINIMUM OF 3:
Favorite Colors:
Taste in Jewelry:
This is a psychoanalytical tool. This focuses mainstream values and character behaviors. This is the inner world workings of characters that evoke emotional responses to each situation.
Language Spoken:
Political Affiliations:
Social Class:
Family:
Father's Name: Profession: Living or dead? If dead, how did he die?:
Mother's name: Profession: Living or dead? If dead how did she die?:
Are parents happily married, or divorced where applicable?:
# of Brothers:
Names:
# of Sisters:
Names:
Description of family escutcheon (Coat of Arms) where applicable:
Interesting information regarding family (Idiosyncrasies/historical significant background such as starting a company that was successful/ war hero ancestors/Scientific innovators etc.):
Marriage to whom and when.:
Number of children, ages, and names if any:
Character's relationship with family:
Thoughts and feelings about their family:
CHARACTER LINEAGE: 3 GENERATIONS MINIMAL
CREATE FAMILY BACKGROUND FOR CHARACTER'S RELATIVES; INCLUDE HISTORY, OCCUPATIONS, ETC WHERE APPROPRIATE.
PERSONALITY TYPE:
CHARACTERISTIC GESTURES (Habitual Mannerisms are Actions that are somewhat compulsive to emotional cues) Name 4 minumum:
RELIGION; WHERE APPLICABLE:
GENERAL PERSONALITY TYPE: INTROVERT? EXTROVERT?
QUIRKS Name 3 or more:
ECCENTRICITIES/ MINIMUM OF 3:
TEMPERAMENT: Emotional Level (i.e. Cries at the drop of a hat/ angry at the drop of a hat):
SENSE OF HUMOR:
METHOD OF HANDLING ANGER/RAGE:
ADMIRABLE TRAITS; MINIMUM OF 4:
NEGATIVE TRAITS= MINIMUM OF 2 preferable to have 3 or more:
BAD HABITS/VICES List MINIMUM OF 4:
PREJUDICES = MINIMUM OF 2:
PET PEEVES/GRIPES MINIMUM OF 4:
FAVORITE PET SAYINGS, WORDS/IDIOLECT MINIMUM OF 5:
SPEAKING STYLES; TALKATIVE, TACITURN, SOFT/LOUD ETC...
PHILOSOPHY OF LIFE:
TYPE AND # OF CLOSE FRIENDS MINIMUM OF 2:
BEST FRIEND:
OTHER FRIENDS MINIMUM OF 6:
What do friends and neighbors really think of him/her?:
What does (S)he value most in his/her friends?:
Who are his/her worst enemies and why?:
THINGS THAT MAKE UNCOMFORTABLE/ EMBARRASS = MINIMUM OF 4:
MOST PAINFUL THINGS IN LIFE MINIMUM OF 2:
TRAUMAS/PSYCHOLOGICAL SCARS FROM PAST MINIMUM OF 3:
MOST CRUCIAL EXPERIENCE(S) THAT HELPED SHAPE PERSONALITY/ATTITUDES MINIMUM OF 1:
FEARS MINIMUM OF 2:
PHOBIAS: WHERE APPLICABLE
MANIAS: WHERE APPLICABLE
PHYSICAL ILLNESSES/AFFLICTIONS: WHERE APPLICABLE
MENTAL DISTURBANCES: WHERE APPLICABLE
HOBBIES: Hobbies or Past times, MINIMUM OF 3(Can these activities show characterization or influence story?):
INTERESTS: (Not Romantic) MINIMUM OF 2
SPORTS:
FAVORITE SHOWS MINIMUM OF 2:
FAVORITE MOVIES:
FAVORITE TRAVEL DESTINATIONS:
PETS:
DIET; RICH OR LOW CHOLESTEROL/FAT?:
FAVORITE MEAL:
Favorite Non Alcoholic Drinks:
FAVORITE RESTAURANT/ETHNIC FOODS:
A: Restaurant:
B:Ethnic Foods:
DRINKS ALCOHOL? : HOW OFTEN? WHAT IS FAVORITE ALCOHOLIC DRINK?:
FAVORITE BOOKS:
FAVORITE SONGS IF APPLICABLE?:
OPINIONS SECTION
OPINION ON ABORTION (As Example):
OPINION ON BIRTH CONTROL:
OPINION ON ENVIRONMENTAL ISSUES:
OPINION ON MILITARY INTERVENTION:
OPINION ON PROGRESS; SCIENTIFIC:
MEDICAL:
TECHNOLOGICAL:
OPINION ON CRIME/WEAPONS CONTROL:
OPINIONS PECULIAR TO CHARACTER MINIMUM OF 4:
WHAT IS HIS/HER ATTITUDE TOWARD SMALL CHILDREN?:
ATTITUDES ABOUT CHARITIES:
LIVING SITUATION SECTION
HOME; APARTMENT/CONDO, MANSION, CASTLE ETC.. LOW INCOME/EXPENSIVE, RENT OR OWN?
NEIGHBORHOOD:
DESCRIBE FURNISHINGS IN CHARACTERS HOME (COLORS AND MATERIALS):
CITY BACKGROUND?:
COUNTRY BACKGROUND?:
TRANSPORTATION:
OBEY LAWS:
WHAT IS THE WORST CRIME (S)HE HAS EVER COMMITTED?:
DRIVE FAST/SLOW
INCOME:
INCLUDES BREAKDOWN OF EXPENSES IF POSSIBLE:
STOCKS/BONDS, INHERITANCE WHERE APPLICABLE.
SEXUAL ATTITUDES SECTION
TYPE OF MEN/WOMEN ATTRACTED TO OR PREFERRED:
FAVORITE PHYSICAL ATTRIBUTES OF OPPOSITE/SAME SEX: MINIMUM OF 2:
ATTRIBUTES OF CHARACTER THAT ATTRACT OPPOSITE SEX:
OPINION ON HOMOSEXUALITY:
SEXUAL TURN ONS: SEXUAL TURNOFFS:
SEXUAL ATTITUDES; PRUDE OR PROMISCUOUS:
WOULD THIS CHARACTER PREFER ORDINARY SEX, OR SEEK MORE THRILLING GRATIFICATION?
EDUCATIONAL BACKGROUND
IQ:
YEARS OF SCHOOLING:
POOREST PERFORMANCE SUBJECTS IN SCHOOL:
FAVORITE SUBJECTS:
MAJOR/MINOR STUDIES IN COLLEGE; IF APPLICABLE:
DEGREES EARNED/AWARDED/ HONORARY:
GRADES ACHIEVED:
SPECIAL OCCUPATIONAL TRAINING WHERE APPLICABLE:
SKILLS/ABILITIES/ & TALENTS: I left numbers because all O.C. characters need these to be realistic.
1
2
3
4
AREAS OF EXPERTISE:
1
2
3
CURRENT OCCUPATION:
PREVIOUS OCCUPATIONS:
1
2
3
4
QUALITY OF WORK PERFORMED: HOURS WORKED PER WEEK: INCOME:
REPUTATION WITH THOSE WORKED WITH:
GUILDS BELONGED TO IF ANY:

And this reason is why Mary Sue stories makes poor writing.
Most of the time, Mary Sue writers get too intent to pile awesomeness upon awesomeness for their Sues to "shine" more that the narrative suffers. Instead of an engaging story, we get is a list of cool things that the character has done. And considering how anything can happen in the fictional world, this list of amazing feats fail to impress.
The presence of Mary Sues are especially irritating in fanfics because they frequently warp the universe of an existing fandom to an unrecognizable form. In other words, they invade the fandom.
People who read fanfics come in with certain hopes/expectations of the settings, rules, and characters - but in Mary Sue stories, all of this would have been changed. Instead of seeing our favorite characters in action, we see them abandon their personality and goals that made us like them in favor of an Original Characters we don't know, let alone emphasize with. We came for entertainment, but we are forced to see someone else's shopping list instead.

One of the problems with Mary Sues is that we're mainly told about them, rather than see them do something. We're told they're smart, witty, good in strategy, perfect, beautiful, strong, independent, social, friendly, etc.
Yet with exception of beauty (a lot of Sue-writers do tend to describe their pet Sue's appearance with huge amount of detail), we never see that proved. Okay, maybe the Sue wins a game of chess in the story's background somewhere (not that that immediately makes someone a strategy wiz), and maybe some people laugh at a witty remark of them (though often, the remark itself isn't shown and if it is, it's usually not all that witty), but that's it.
Sometimes, we hear about them doing things that prove those points, but even then, the actual action is rarely shown. "Mary Antoinette Raven Tara Susan "Sue" Blackwood smiled as the strategy she had convinced the others of proved to be working." vs. "I think," Mary said, "that we should reinforce the troops here, because the intelligence we have suggests the enemy will likely come ashore nearby. Perhaps we could set up a trap there for them."
The first only tells us she's good in strategy, the second shows it (or disproves it, depending on the result later in the story).
Of course, it's not a problem if some things are told rather than shown; however, the problem with many Sues is that we almost completely have to rely on things the author tells us, rather than shows us, which makes Sues boring - perhaps even moreso than their supposed lack of flaws, or the sheer predictability of the character and events it stars in. (It also basically makes most Sues a form of unreliable narrating)

@JayDee
Well, that would have been interesting, to say the least. XD
@Shannor
You're right, "hai" can sound too terse on its own. Depending on the question, some other words should come after it, i.e.:
Hai, wakarimashita. (Yes, I understand.)
Hai, sou desu. (Yes, that's right.)
Hai, [positive form of the verb i.e. "yarimasu"] (Yes, I will.)
"Hai" is a rather polite way of agreeing. This would be okay if you're talking to someone older than you, or in a higher position than you, but if you're talking to your peers, friends, or someone younger than you, it would be more natural to agree by saying "un", "aa", "sou", or just the positive (short) form of the verb you're agreeing too. Though it could also depend on your personality and upbringing too.
Try and read the part entitled "14. Yes/No in Japanese" on THIS PAGE. (Find it via Ctrl+F). It gives a concise explanation of Yes and No in Japanese.

I'm pretty sure I saw zygote on zygote action in the HP fandom. After that, it's hard to think.