Seeing Red (Seeing Red #1)

Ella is an orphan that has been raised by a group of demon hunters called the Kulling. She been trained to kill demons but never raise her blade to a human. Childhood trauma kicked in after seeing a village attacked by raiders, Ella viscously kills the raiders. Breaking the rules of the Kulling means death. Mazos, her adopted father couldn't kill her. He burned her Kulling seal off of her back, leaving her alone, barely alive. Now, she's alone excommunicated out for blood be it a raider, demon, or hunter.