Hi,
thanks for using health care magic.
I can understand your feelings.You did not describe her age,location and other medical conditions and reports if any, otherwise I can help you more.But still I will try to give best advice from my side.
On and off
high fever for 3 days with loss of appetite suggestive of typhoid(
enteric fever) specifically if with headache and
abdominal pain.If
widal test note done, please go for that.Sometime widal comes positive after 5 days.
Another possibility is
malaria specifically with chills and rigors. QBC count will be helpful investigation.
If wbc counts normal, one possibility of viral infection.
But she is not able to speak that is something to worry.It suggest infection may have affect the brain.
Hope this would helpful to you.
I recommend you to take photos of her reports and ask detail question on this site,you would surely get some help.
Regards,
Dr.Chintan Solanki