But for female teachers, other motives may come into play: the desire to “care for” a male child from a broken home, which then de-evolves into sex; a need to feel attractive, wanted, and sexually desired by a young man, who may not have the capacity to understand or give real love, but certainly has the testosterone to provide sex; or even as revenge against a husband who is no longer emotionally supportive.
"Heterosexual nurturers” are women who develop sexual relationships with children and adolescents on the basis of feelings of love or a desire for intimacy. These women also often mistakenly assert that their behavior is not abusive.
Lots of reasons but it's generally by women who lack a partner or don't have thier emotional needs met. They don't feel threatened by the child and confuse thier mentor/pupil relationship as love and as such doesn't see thier abuse for what it is.
BG3 was a buggy mess and the story has much to be desired. They should have kept the Chris Avellone writing.