Mrs. Carroll was called to the hospital with her husband when Mary was admitted and arrived about an hour afterwards. Mary was traveling with her coach and the rest of her swim team when she was admitted.
The team finally determined Mary had thrombotic thrombocytopenic purpura due to her pregnancy. She asked the doctors not to tell her parents and they respected her wishes. House actively dodged the question when her parents asked. However, Mary later told her parents herself.