Divine Magic — T. Jackson King

A death god is hunting for Janie. But she does not know its name or gender. Then the Three Furies visit her to tell her she needs to further curse media mogul Derek Lunessee. To help her with that task the Furies hold hands with her and transfer some of their God Power into her. She's never felt God Power, which only true Gods and Goddesses possess. Now, some of it is present in the cells of her body. Janie becomes more powerful than ever before. Demons from Tarturus and Hades come after her, including the demon prince Belphegor. Who wants her soul. Janie finds ways to survive her new dangers, and learns how God Power can make her something she has never before been. A demigod!