Snow Wicked White by Allie Burton

Destiny Snow is the last known banshee in the kingdom. Or she fears she is because her grandfather has disappeared. Humans and majiks alike discriminate against her because of the banshee wail. That’s why she and her grandfather have always lived as hermits and never joined the majik resistance movement. Until royal guards knocked on her door.
Under the regent’s orders, Destiny is held in a cell with seven other criminals while she’s forced to track majiks to steal their power. Except she’s never been trained and has no magic. When she makes a mistake, important resistance leaders are captured, including her childhood crush, Stone.
Can the bad news banshee convince her cellmates that she can be trusted and help them escape the dungeon before they’re all tortured to death?
Snow Wicked White is the first book in the trilogy and the fourth book in the series.