Daughter of the Blood. Nancy Holder

This is your battle, Isabella. Kill him first. Or he will tear down your house.In her old life, Isabella DeMarco lived in New York with her father and had just started to fall for a handsome police lieutenant. Then she learned the truth–she is Gifted, a powerful magic user. In her new world, Jean-Marc des Ombres is the one person Izzy can trust as she claims her birthright–keeping New Orleans and the House of the Flames safe from supernatural enemies. But those enemies will do anything to destroy her. When Jean-Marc is injured, Izzy is caught between fighting off a powerful vampire and opening her House to a potentially treacherous ally. And now the lives of the people she cares about most may be sacrificed for her own….