Goof (storyline continuity): When Claire is admitted we are told that she passed out in the shower. Although, when Meredith sees Claire's scars on her abdomen, Claire requests for Meredith not to tell her parents. Her parents seem equally clueless. But if she collapsed in the shower, wouldn't her parents have seen those scars? Unless she was showering fully-clothed.
Possible Explanation- They talk about her going to college and coming home at Christmas. It's possible she lives in a dorm and not at home and this is where she passed out. So her parents wouldn't have seen her stomach. They would have met her at the hospital.