byran47, unfortunately, misinterpreted the situation.
It is made very clear that the character has not been prolific. She has instead been awaiting her new 'Master' the entire time. Sure, she got implants as directed by her supervisors, but otherwise, she's just been enjoying her time in a new place with a vast library of books to read.
Nowhere in the script does it say she has been with anyone.
In fact, she even mentions this when MC first makes love to her:
"I haven't been with anyone for 3 years, <MC>. THREE YEARS!!"