Aarmau - The Voice Awakens

Aphmau is a mute. She's always alone and doesn't socialize. She has a voice in her head telling her to cut and commit suicide, but she doesn't listen. She's abused by her father and never come to school without a fresh bruise. One day, she hears a voice like none other. That voice begins to fight her own voice, and she collapses. She then wakes up to that same voice.

To find out who, then read this book!