Personally, for my playthrough (I'm generally not a fan of NTR), I actually wasn't overly affected by her past, I understood her position and the character, it was what she was doing while around the MC and how the story progressed in that aspect. I almost stopped playing the game when I realized the first scenario with grant was unavoidable. After trying the Nikki mod, the dialogue didn't seem right to me, and after some more reading on the forums, how you can stop her from seeing grant and not pursue "D", I decided to play a non-modded version. I understand some players feel differently regarding her past defining her character in the game though.
My main concern was to have a LI that wouldn't go a NTR route or have scenes in that same regard. I was able to go with the molly/nikki route and was satisfied with the gameplay/outcome.
In any case, I think my main statement was meant to mean that the game isn't heavily focused on NTR like others can be. Most of what I consider "Hard NTR" where it's unavoidable visual scenes wasn't present in my playthrough due to options available.