Take her to the pediatrician, she is young with not a hard skull to protect her brain. Also you never let a child go to sleep for an hour for it will tell you her condition if you not already on the way to the ER. if a child hits the head at a young age, take to the pediatrician, children react differently, but the quickest sign is vomiting. My son was horsing around with his brother falling and hitting his head after 1/2 hour he vomited, called the pediatrician told me to go to the Pediatric ER because convultions can start. Head trama can also cause blood clots to and in the brain since her scull is still soft and mangable. Pray all is well.