E.A.
(This is a 102-103 fever for those in the US that haven't googled it yet.)
This is not unusual. Keep her rested and hydrated and let the fever do its work. You should see a cycle with the fever, it will get higher in the afternoons, so keep her quiet during those times. I usually gave fevers a day or so to do their work, and only gave medicine if the kid was uncomfortable and/or couldn't sleep. My oldest used to only get fevers, no other symptoms, at that age.
And the temp of the fever isn't really all that high, especially if her behavior hadn't changed much.