Hi and thanks for the query. Looks like your daughter has upper respiratory tract infection. She will require a course of an appropriate antibiotic, and anti inflammatory. For proper evaluation she needs to see a doctor. Till then let her follow some simple general measures 1) Warm salt water gargles. 4 times per day. 2) Voice rest. 3) Lots of water - 4 litres per day. she can have all fruit juices, milk shakes, soups, tender coconut water, ect any fluid as long as it is not from the refrigerator. 4) Avoid airconditioning, fan. If cannot avoid in office then she should atleast sit away from the vents and consume even more water. 5) Vitamin c rich foods like oranges, lemons, and mosambis. Take care, Dr Rajkishori.