Hi.. Thanks for the query.. As per your complain and presentation of symptoms the most common cause of the symptoms that your daughter has are due to viral infection and dry mouth and chapped lips are secondary to dehydration as she must not be drinking enough fluids.. Nothing to worry, just give her Acetaminophen or Tylenol so that fever will come down.. Feed her with more of cool , bland fluids to prevent dehydration.. Cool milk, juices etc can be soothing as well as reduce dehydration.. apply petroleum jelly over the lips to prevent cracking and maintaining lubrication and it also locks moisture.. Take her to the Paediatrician in the morning and get a proper evaluation and treatment done.. Hope this helps.. Regards..