Thank you for your query,
She seems to have Viral illness.
for fever in the prescribed dose every 6th or 8 th hourly depending on the presence of fever.
The trunk will be hotter in relation to the limbs as the temperature conduction properties.
Give plenty of oral fluids, sips of Pedialyte
and try to give soft diet
Consult your Pediatrician
for the examination to look for any focus of infection and for the appropriate medication.
Hope I have answered your queries.