It fits what we know though (which is fuck all, obviously), if she's reticent about going all the way with MC it could just as easily be as a result of past trauma as it is that she's a virgin or that she won't go there while he's seeing other girls
I feel that the optimal Bella route would've been the old 'quickly raise your hand, see them flinch, then smooth your hair down' manoeuvre
She is from a rich household. Those girls usually are either slutty, rebelling against the strictness of their home or really damn shy, as it practically gets imprinted into them.
Just because she is reluctant to let MC pop her cherry, doesn't mean she has trauma or got molested etc.
For all we know it could even be her saving her first time for the one she is absolutely sure about.
Which, in my eyes, fits the bill with Jill a lot more than a she got molested/whatev theory ^^
I wasn't really thinking molestation, more some guy from high school or college who took a hard 'No' to mean 'Not just yet' which resulted in her having to run out the room screaming when he tried to steal third base.
Taking a No for a Maybe not yet, let's try it anyways actually IS molestation.
Only if it only stays nonphysical, it will change into mental abuse, if the established case from highschool for example reacted like an asshole and started throwing tantrums, insulting her and stuff.^^