Flight of the Crow — Melanie Thompson

In Flight of the Crow, the second book of The Saga of the Steampunk Witches, Bryn Sahir is plunged into a world of evil as she carries her infant sister, Fenix, to Paris to find Draak Priest and reclaim the Coeur de Flamme, the stone that will end hers and her sister's curse. When Lazarus, the original vampire, traps her into a bargain she can't escape, she places her sister in mortal danger. Can she steal Lazarus's magic dagger from Priest in time to avoid losing Fenix to Lazarus? Or will Priest succeed in transforming himself into a young man and escaping Paris with the stone and the dagger? Bryn's quest takes her into the dark world of the catacombs beneath Paris, as she tries to save Fenix from being turned into a vampire, and becoming Lazarus's unholy bride.