Strange Angels: Defiance: Book 4

Sixteen-year-old Dru's worst fears have come true - Sergej, the deadly nosferat, has kidnapped her best friend Graves and she must now go on a suicidal rescue mission to bring him back in one piece. That is, if she can put all of Christophe's training to good use, defeat her mother's traitor, Anna, once and for all, and manage to survive another day...