Daughters of Jubilation by Kara Lee Corthron

In the Jim Crow South, white supremacy reigns and tensions are high. But Evalene Deschamps has other things to worry about. She has two little sisters to look after, an overworked single mother, and a longtime crush who is finally making a move.
On top of all that, Evvie’s magic abilities are growing stronger by the day. Her family calls it jubilation—a gift passed down from generations of black women since the time of slavery. And as Evvie’s talents waken, something dark comes loose and threatens to resurface…
And when the demons of Evvie’s past finally shake free, she must embrace her mighty lineage, and summon the power that lies within her.