Ask her if she has the toilet dream. My son is a night time bed wetter, and he's a heavy sleeper. He's told me a few times that he dreams he's at the toilet. I was a bed wetter when I was a kid, and it was the same thing. I personally believe you can't punish a child for wetting in their sleep. I would've done the same, buy a cheap pack of pull ups and take the stress off of her.