Thanks for posting your query.
She may have common cold
(Acute flu fever
) or meningitis
You should consult with physician and get thorough check up.
Meningitis is diagnosed by neck rigidity
with positive kernig's sign.
While her symptoms suggest acute flu fever, while you should not ignore the consultation with physician.
For flu, she should take decongestants, antipyretics, cough suppressants, muscle relaxants and gargle three times in a day.
Get well soon,
Dr. Mayank Bhargava