When in coma

Cassie love to play her violin.She fell in love with the violin when she's still a kid.She was inspired by the old man who gave her violin.And she met this boy (that she usually calls "Mr.Chase") on their class.The boy were always been bullied at their class so cassie were always there to defend him.But one day,she didnt saw the boy anymore.. After how many years cassie was about to go on her recital with her dad.But she didnt know that she will encounter a harrowing and tormenting incident that will changed her life.