The war within (A supernatural fanfic)

Mia Easton isn't your normal girl. When she was just a baby her parents died in an accident that no one wants to explain to Mia who is now 23. Mia is confused and hurt by not knowing how her parents died. She also feels different, like something inside her isn't right. Soon things start happening. Mia sees things she can't explain. She will soon learn that she is anything but normal, and part of a war. Because of this she will meet the Winchester boys, and an angel named Cas. Why is Mia so important? How did she get the way she is? And what business does she have with the Winchesters? Find out in the war within!