My LO has been a crabby mess since daycare today. She has been sleeping off and on since she has been home. Do I let her continue to sleep (it is 7pm here) Her bedtime is 8:30 and she hasn't eaten yet. I can't tell what is wrong with her. She has a snotty nose, but doesn't have any other symptoms. She normally wakes up happy as pie, but not now. Any suggestions?