The City Beneath (Night Blood #1)
Melody Johnson

But Dominic offers Cassidy another option: ally. He reveals she is a night blood, a being with powers of her own, including the ability to become a vampire. As the body count escalates, Cassidy is caught in the middle of a vampire rebellion. Dominic insists she can help him stop the coming war, but wary of his intentions, Cassidy enlists the help of the charming Ian Walker, a fellow night blood. As the battle between vampires takes over the city, Cassidy will have to tap into her newfound powers and decide where to place her trust...