Gone Ghost — Sara C. Roethle

Some demons really should just stay dead. It would make Xoe's life a lot easier. She'd still have to deal with werewolves, witches, and a crazy, murderous demon, but all of those things were doable. Her new problems were a little less clear. With her life hanging in the balance, Xoe may finally have to admit that she needs a little help, and it might not come in the form she would have guessed.