Human kindness? The fact that he's not a psycho? Summat like that. Call me old fashioned, but I make our lass stuff to eat all the time.
Ah but If he's trying to get her off the bog and out of the bathroom.....then making her come out for some food might help! But you are right - it would all be his fault!
Would you play food denial with an obvious mentalist? I'd have called the police after a couple of hours like.