Orison

Shunned by the other dryads, Aurianna lives unloved and alone. When a beautiful human named Branson King crashes into a tree and kills her grandmother, the dryads force Aurianna to take an oath that she will find and kill Branson—or die herself. But instead of finding a hardened human heart, Aurianna discovers friendship, affection, and sparks of passion—along with a deadly secret. As her relationship with Branson grows, Aurianna is confronted with a harsh reality: in order to live, she must kill the only person that might ever love her.