An abused young woman heroically rescues her sister-in-law from a kidnapper, but because all her friends are assholes they just tell her how angry they are when she wakes at the hospital.

In a tragic, Brazil-style (Terry Gilliam, 1985) epilogue, she falls into a delusional fantasy of happy domesticity and motherhood with her abuser. It's not clear what really happens, because the book is written from a first-person perspective and the narrator is established as quite unreliable, but my reading is that she falls back into a coma after succumbing to her head injuries.

This book does have a lot of explicitly sexual material, which is the main reason you might want to read it. Those scenes are OK. That's why I gave it two stars instead of just one.