My 14yr.old granddaughter has been having sleepwalking episodes. My son found her locked in one of their bathrooms early this morning. She had a knife and was unresponsive. She had no memory of that event or any previous events. My son and daughter-in-law fear she may have multiple personality disorder. She s on Paxil, is seeing a psychologist, and will see a psychiatrist later this month. My son has hidden all the knives and other sharp instruments. what is your opinion?