Fledgling — Octavia E. Butler

Shori is a mystery. Found alone in the woods, she appears to be a little black girl with traumatic amnesia and near-fatal wounds. But Shori is a fifty-three-year-old vampire with a ravenous hunger for blood, the lost child of an ancient species of near-immortals who live in dark symbiosis with humanity. Genetically modified to be able to walk in daylight, Shori now becomes the target of a vast plot to destroy her and her kind. And in the final apocalyptic battle, her survival will depend on whether all humans are bigots -- or all bigots are human...