Mark of the Wicked by Georgia Bowers

Magic always leaves its mark. All her life, Matilda has been told one thing about her magic: You use only when necessary. But Matilda isn’t interested in being a good witch. She wants revenge and popularity, and to live her life free of consequences, free of the scars that dark magic leaves on her face as a reminder of her misdeeds.

When a spell goes awry and the new boy at school catches her in the act, Matilda thinks her secret might be out… Read more.