Thanks for writing in.
I don't think there is anything to worry .
Apply ice packs on the affected area intermittently 3 times a day for 5-10 minutes. Give her a paediatric dosage of paracetamol
which might relieve the pain.
If symptoms of pain persist while chewing or coughing even after 3 days; I would suggest you take her to a paediatrician.
Hope this helps.
Dr. Divya Kuttikrishnan