Akata Witch: Akata Witch Series, Book 1

Twelve-year-old Sunny lives in Nigeria, but she was born American. Her features are African, but she has albinism. She's a terrific athlete but can't go out into the sun to play soccer. There seems to be no place where she fits in. 

And then she discovers something amazing - she is a "free agent" with latent mystical power. Soon she's part of a quartet of students studying the visible and invisible, learning to change reality. But will it be enough to help them when they are asked to catch a career criminal well-versed in powerful juju?