[he waits for the door to respond, but it gives a negative buzz at the answer. he gives Xion's hand a reassuring squeeze]

You're close. It's got to do with memories, definitely, but bringing it up has got to drudge up memories she can't bear to think about! Have you seen her lately? Ever since the murders, she hasn't been as boisterous. Like someone snuffed the light out of her as well...