Oh, hey, a party. That was better for her sanity and her wakefulness than talking to herself. Cosima smiled, nodding to Hermione and giving a little finger-wiggle-wave at Elizabeth when she walked over. "One theory beats me. Unless someone gives me access to an MRI, because then we're talking, but..." she shrugged. That didn't seem like it was going to happen and, perhaps more depressingly, that didn't seem like it was due to yield results she could really use. It wasn't her focus, after all.
Normally, she was very, very enthusiastic about the field of science she'd chosen, but today she was fielding some doubts. Then again, what would she have studied that would have been useful here? Demons? Demonology? Possession theory? "I tried the science side of things, but I'm at a dead end based on the materials we've got here and a lack of specialized knowledge in... you know, sleeping disorders and psychotic fugue-state episodes that act like possession. What have you got?"
She dropped into a chair, letting out a breath. She'd not been going at this as long as the other two, but she was tired. It was--she hated to admit, didn't want to consider--because of her condition. She got fatigued too easily, and it was frustrating. Not quite as frustrating as being pushed up against this crazy problem, granted.