The Girl Who Won't Speak

Diana grew up with a mother on crack and an alcoholic father. Her brother has not been seen for two years and sister committed suicide. She won't speak because it reminds people of her sister when she thinks that she should have been the one that died. She later finds her sisters suicide letters and finds out what shrine her to suicide, and now she is out for revenge.
She was a gangster before it happened
She is mute after it happened
Now she's bad ass and isn't afraid to speak her mind

WARNING: I'm publishing the book but I'm going to write the book and wait until it's finished to publish it