Since "tween" refers to the 10-13 year old age group, I'm presuming her roommate is just another girl sharing her hospital room, right? In that case, it's best to address concerns with the hospital staff. They could always switch her room.What is the name of your state (only U.S. law)? North Carolina
My tween daughter was admitted to the juvenile pshyc ward at a hospital and her female roomate french kissed her.