Until the Silence is Broken

Cassie was a normal teenager until her best friend Niall Horan started acting like the bully instead of the boy who always stood up for her. Weeks later her friend was murdered while Cassie sat there watching the life drain from the body. She was so traumatized. It's been three years. And she hasn't talked since. When Niall calls her out of the blue and she can't talk, what will he do? When he comes into town can she forgive him?