If your daughter has had a cough for 10-14 days, it is recommended to consult a doctor for further evaluation. A persistent fever may be a sign of an infection, and if this is the case, antibiotics may be necessary. It is important to monitor her symptoms and seek medical advice if her condition does not improve or if the fever lasts for more than three days. Remember to keep her hydrated and consider using nasal saline solutions to help with congestion.