Sleeping Beauty

I have recently found that Lydia likes to sleep on her stomach more than on her back. Well, I think she prefers it. But perhaps it's just that she doesn't like it when she is left in her bed for a nap, and I leave the room. She always stands up and cries for a few minutes, until she is just too tired and falls asleep. This usually means she ends up on her stomach, and sometimes in some pretty funny positions.