Red Delicious by Caitlin R. Kiernan

Siobhan Quinn is back and working a new case in the dark and satirical sequel to Blood Oranges.
Half-vampire, half-werewolf Siobhan Quinn survived her initiation into the world of demons and monsters. But staying alive as she becomes entangled in underworld politics might prove to be more difficult. When the daughter of a prominent necromancer vanishes, it's up to Quinn to find the girl. But her search will land her directly in the middle of a struggle between competing forces searching for an ancient artifact of almost unimaginable power...