Keep her awake and take her to the ER I know its scary with all the CPS bs and stuff but better safe than sorry. My son has had accidents a few times and I always took him to the ER to get checked out and nobody ever called CPS on me. I just feel its better to get it checked out!
I would call the pediatrician's advice line or after-hours line and see if the baby should be checked. If her eyes are dilated irregularly (in other words, one is and one is not), go to the ER.
you should not let her fall a sleep give it 1hr half good luck