In the beginning, before she understood what it wanted, it felt as if light followed her. It bent around her, nearly imperceptible, but it made the wrong shadows. It felt like a sentient thing, tracking her.
One summer day, she sat in full sun, stretching her limbs like a cat. As she flexed her fingers, luxuriating in the tingle of muscle over bone, she saw the light bent with her fingers. Where she moved, it moved, and she was pulling it in towards her in strands. Thick ribbons of pale sunlight that curved in and popped away again as her fingers bent.