Thanks for writing your query.
After reading your post, it seems that your daughter has got cellulitis
and needs urgent medical attention.
She should be clinically examined and investigated.
Following investigations can be helpful :-
1. Complete Blood Count(CBC).
2. Culture and Sensitivity of pus.Fever
and pain is due to the infection.
Antibiotic can be started according to the reports of the culture and sensitivity of the pus.
For fever, paracetamol
can be given. Any medicine should be given under medical supervision and only after getting her clinically examined.
I hope this is helpful to you.