Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns....
As per your complain as your daughter has fallen on her face there might be traumatic
injury to the lip leading to inflammation and swelling of the lip..
As she is acting completely normal you need ot to worry as there does not seems like anything serious..
You can do cool compresses on her lip and if there is pain you can give her
tylenol..
I would also suggest you to inspect the inside of her lips to ok for any laceration that might have occurred due to hitting of teeth against her inner lips..
In case if you find any abnormal symptoms like recurring
vomiting,
dizziness or
nasal bleeding immediately take her to emergency room..
As of now all seems alright..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora..