It could be a hint that something happened to her somewhere or it could be a hint that she is mentally ill. I’m not passing judgement on her claims as nobody knows the truth of them but it is important context that she is very mentally ill. Sam has antisocial traits too; should we assume he was sexually abused? Or, and hear me out, their personality disorders could possibly be part of that whole being related thing. Sam is also a prolific liar. It’s not that I beleive Sam, it’s that I don’t think either is reliable for anything resembling truth.