The Mage in Black by Jaye Wells
The sequel to Red-Headed Stepchild from USA Today Bestselling author Jaye Wells...
Sabina Kane doesn't have the best track record when it comes to family. After all, her own grandmother, the leader of the vampire race, just tried to kill her. When she arrives in New York to meet the mage side of her family, the reunion takes the fun out of dysfunctional.
On top of that, the Hekate Council wants to use her as a pawn in the brewing war against the vampires. Her mission will take her into the bowels of New York's Black Light district, entangles her in mage politics, and challenges her beliefs about the race she was raised to distrust. And Sabina thought vampires were bloodthirsty.