book: promise of shadows by justina ireland. genre: fantasy

summary: ZEPHYR MOURNING KNEW SHE WASN'T A VERY GOOD HARPY, BUT SHE NEVER THOUGHT SHE WOULD BE A MURDERER. She'd rather watch reality TV than learn forty-seven ways to kill a man, she pretty much sucks at wielding magic, and she was prepared for a future pretending to be a normal human instead of a half-god assassin. But then her sister is murdered-and Zephyr uses a forbidden dark power to save herself from the same fate. Now Zephyr is on the run from a punishment worse than death when an unexpected reunion with a childhood friend changes everything. It seems like Zephyr might just be the Nyx, a dark goddess who is prophesied to change the power balance. For hundreds of years the half-gods have lived in fear, and Zephyr is supposed to change that. But how is she supposed to save everyone when she can't even save herself?