My Mother-in-Law and I Tear Apart the Scumbag's Whole Family

The story

Twelve-year-old Mia can summon a demonic black bear. She returns home to find her stepfather Voss, a shelter chairman, is an abusive murderer after her $50M inheritance. Mia exposes him at a charity gala, frees her mother in court, and destroys Voss when he kidnaps Vera.