She acted like she was possessed by demons, it was kind of disturbing. I was visiting them once when it happened, and she kept trying to destroy the milk bottle. She kept trying to pull it out of the fridge and throw it on the floor. Then she would thrash around for a bit. Just completely irrational. Can't talk to her or reason with her when it's happening. Thankully, she just grew out of it after a while. I think she sleepwalks now though, maybe the two are related.