It's easy to forget certain things, like how young we used to be when things happened to us. It's easier to imagine that we were older, more sophisticated, more capable of handling trauma or challenge. I appreciated that aspect of the film; the detective work she does, the memories that appear suddenly with various (or no) triggers.
The relationship with the mother is tense, but idealized, in my opinion. The mother becomes a confidant, in a way, and an assistant in Jenny's search for the truth. The mother then ultimately apologizes for not protecting her daughter all those years ago. How nice; yet, this rarely happens.
Also, Jenny's partner is shocked at the news, but rather supportive. How nice; it doesn't always happen like that, either. Partners often can't manage their significant others' trauma and leave, back out, or shut down.
Many survivors of childhood sexual abuse and incest (some would define the abuse in this film as incest because Jenny was led to trust Bill) lead quiet, solitary lives. They struggle professionally and in relationship, often (and unconsciously) allowing others to take advantage of them. That wasn't really reflected here. It's not a miss on the director's part, it's just not represented.