This brings me to think that it could be a good idea to write her fantasizing about sex; whatever the way she has been exposed to it.
This might stir up her sex drive would also level up her expectations about her first time.
Would it be a good concept to have a girl with a high sex drive that exudes through her natural attributes and charms, but that she only commits to a few partners.
Maybe she does not intend to be that charming, but it is through the eyes of the beholders that it is shown : like she has the impression that she is often stared at or the way the people are talking about her, assuming that she is what she is not.