Hibernation?

Ainsley fell asleep at 8:30pm last night and slept until 12:15pm today! (Yes, that's noon!) 16 hours!!! As soon as I walked in her room she said, "I want chips!" She still has a fever, though. I'm waiting for the on-call nurse to call me back. She's had a high fever non-stop since Monday. I don't think this is normal, even for a virus, so I'm thinking about taking her to a different doctor. We'll see what the nurse says, though...