Books in the Bat Blood series

Claraicy was both physically and psychologically abused by her father. While left in the woods to die, she was attacked by a pair of strange creatures. After surviving a harsh winter, she begins to mutate and grow stronger. Unable to think or act like a normal human being, she lashes out. The police and army along with several others get involved, each with their own motives and agenda. She is hunted down for both what she knows and the mutated cells inside her. Unable to control her, Duncan, the soldier responsible for capturing her, gets desperate. While unleashing all the military resources at his disposal, the body count increases. As his mind turns darker, so do his methods. As Claraicy turns more creature then human, she feels like she has been given a new life. Her only problem is, she cant get over her hatred for Santa Claus.