Harrison Paul: 3 books

Kaybree is a Witch, a being born once a century with the power to break the world—a power which she wants to use to cure disease, alleviate suffering, and build a better world. But the Angels, mankind's holy guardians, have the sacred calling to eliminate Witches before they can use their power...

Kaybree has grown up hearing stories of the Angels, mythical beings who used to defend Nordgard from the creatures of the forest. After leaving mankind without guidance for centuries, they returned fifteen years ago, leaving a fiery swath of destruction. When Kaybree is called to the outpost...

While Kaybree continues to defend the city against the Angels, she also investigates her mother's secret society. She wants to believe that her mother will use the Witch's power for good, and wants to trust her heart and conscience to Galen. But are the Angels oppressors as he claims, or are...