Dimensional Realities

Sam and Dean almost hit a girl named Avery when she jumps out in front of the Impala on an old Kansas road. She's lost everything: Her family, her home, and maybe even her mind, but that's the least of her worries when Abbadon learns that she's there. Who is she and how will she affect the brothers' plans to save the world one more time? Rated T for language. Set in season 9.