She might require an admission Kindly visit a Pediatrician

Consult with Pediatrician physically for further evaluation and treatment

Fever has subsided now that is fine, could have been a viral infection. Children tend to become irritated during and after illness periods. Try to give semi solid foods, continue giving water whenever the child asks for it, you can try giving fruits , try to make him/ her eat while others are consuming meals at the family table.