Fading Angels [SPN Fanfic]

Kaylee is an eighteen year old girl that has for her whole life been different. Her only friend is her pet cat Apollo. For her whole life she was in foster care with her only goal of finding her parents and living a normal life. Kaylee's life is far from being normal this year. Kaylee notices that angels are vanishing and tries to help them. But Kaylee is in danger. Now that she is in the game she is being hunted by powerful beings.