Devil in OhioDaria Polatin2017

A strange, damaged girl lives with a family after escaping a cult in this debut YA suspense/thriller that was inspired by true events.
When fifteen-year-old Jules Mathis comes home from school to find a strange girl, her mother explains that Mae is one of her patients at the hospital and will be staying with their family for a few days. But shortly after, Mae is wearing Jules’ clothes, sleeping in her bedroom, edging her out of her position on the school paper, and kissing Jules’s crush. Then things get weird.
Jules walks in on a half-dressed Mae, she’s startled to see a pentagram carved into her back. Soon white roses start turning up on the front porch, a rabid dog bites one of Jules’ sisters, and Jules’ parents, who never fight, start arguing behind closed doors.
Jules pieces clues together and discovers that Mae may be a survivor of the strange cult that has taken over a nearby town. And they will stop at nothing to get Mae back.