Guardians of the Cross (Warrior, #2)

Allison La Crosse's world is in a tailspin.  After learning she has the power to cure the dying with her touch (a lethal curse when wielded), she is viciously attacked. More unsettling than the violence is the identity of her assailant. Devin turns out to be the first person she ever saved and her mother's killer. When her soul met Devin's an unbreakable bond was formed. Now, Allison must save Devin - again - from his twin brother's control or kill them both. If she fails, she'll lose those closest to her...including the love of her life, Brody, and her best friend forever, Clark.