What is the name of a book that a young mute girl who gets kidnapped by her alcoholic father?

I'm trying to remember the title of a book that I read a few years ago, and I only remember a few things from the book. I remember that the girl is mute because she's traumatized by something her father did when she was little because he was a drunky, and she now refuses to talk. She woke up around 6 in the morning and walked out to, I think, meet her friend. Her father was on the porch, and made her walk out a bit in their field where he tried to make her speak, but she got so scared,she peed her pants.Then, her father took her into the woods, and her little friend followed. After her friend followed, her friend either tripped, or got murdered, and the mute girls brother found the little girls body later. I also remember that the mother of the mute girl met her alcoholic husband at the gas station where she worked, and he swooned her, and stuff. Then at the end of the story, the brother finds the mute girl and the father, and the father tries to kill the brother, then a police man comes on an atv and helps save the brother. and they ride down, and i think they capture the husband. The family of the little girls mute friends, however realize that the other girl was killed, and they fall apart. I don't remember anymore,and I tried googling it, but nothing came up. Does anyone know what I'm talking about?