Hi thanks for contacting health care magic.....
According to history here your daughter having
viral fever that can lead headache as constitutional symptom..
Dengue is prevalent in your region , so test for it by serological test for dengue by IG M antibody detection done....
Check for neck
stiffness by touching your chin to chest ....
If it feels difficult to touch chin to chest , possibilities of
meningitis like infection can be there for which
lumbar puncture needed.
Symptomatic treatment done....
Antihistaminic drug can be given for congestion .
Drink more water.
Avoid excess spicy and fatty foods.
Steam inhalation also helpful in congestive symptoms...
Consult physician with keeping my answer in mind...
Take care.
Dr.Parth