According to the history, your daughter is being treated for Bacterial infection and Diarrhoea
,Nausea, Vomitting are the dose related sideeffects of Azithromycin
Proper dose of Azithromycin is 10 mg/kg body weight for 3 days for Pediatric patients.
To reduce the sideeffects syrup Omeprazole
Since her symptoms are not relieved even after the treatment, the infection may be due to a Viral cause.
Temperature should be controlled by Paracetamol
syrup 10mg/kg/day if not controlled, cold water sponging.
You should not worry, viral infections are usually self limiting.