Help me find this book.

I am uncertain of the plot. I think it is somewhat similar to house on mango street, though it could just be that it was written at the same time. I want to say the characters are latino, though I could also be confusing it with House on Mango Street. It is about a girl / young woman, that goes through her regular life, but then gets assaulted or molested by someone. Could be a cousin, an uncle, or a neighbor. This person is a very close friend of the family. She has a weird relationship with her brothers and parents, but eventually confesses after years of having to be friendly with her perpetrator. After she confesses, she expects her family to not believe her. Then HE shows up at their house maybe the next day, and her siblings and parents each show up behind her, place their hand on her shoulders. I distinctly remember the author writing ".....as if to say you can't mess with this one. She belongs to us. She is protected". At this point she is much older.

I really thought it was House on Mango St, but it is not. Pleaseee help.

I don't recall how old it is but I may have read it about 20 years ago.