I'm sorry you and your daughter are going
through this.
I am sure you have realized that the fever
is not the problem itself, but is a sign
of the illness. Fever is one of the ways
the body uses to purge itself of the
infection. Sometimes it is possible to
let the fever run it's course and that
solves the problem: keeping it down
sometimes isn't the best solution. The
important thing is to keep her well
hydrated.
It is possible too that she could have
some mild form of a disease or virus that
shows no other symptoms, such as
chickenpox.
Although I can't tell you what the cause
is, here is a link that will help you
understand about childhood fevers:
http://raisi
ngchildren.net.au/articles/fever_a.html