Looking for fic - Human Female Scientist and Male Captive Alien

[Guest OnceAgainAGuest]

Trying to find a story I read some time ago… I don’t even remember the site but I can’t find it here or Ao3 or anywhere.

If featured a human woman scientist who enlisted in some company and assigned to a special research project in a secret facility that turned out to involve a sasquatch-esque alien. In fact, she’s selected to be a breeding partner for the alien by the company and is sent into the alien’s enclosure, which is built to resemble a forest; she was hired because the alien was shown several photos and chose her specifically. I remember the fic ending with the alien being more intelligent than they thought and escaping with the woman, getting to his ship, and leaving, bringing the woman with him as a sex slave or something. I want to say the beast’s name was “Atlas” or something to that effect.