Diamonds by Jordan McKinney
Approx. 99,950 words.
Published on January 3, 2012.
Tomika Drake, her half-sister and her half-sister's mother move to a new city and learn that the neighboring burg has been tackling an issue with mutants and other terrors, including a gang that Tomika's half-sister gets caught up in.
Using her inherited abilities, Tomika must do away with the doubts incited by her mother's death and save the city.