Hi well come to Hcm.
Shivering and fever
both can be in any infection.Even hidden abscess
abscess, splenic abscess can give rise to this.Even malaria
report if partly treated
may be negative in spite of having malaria or when blood collected when no parasite
in circulation.same thing with urine if done after giving antibiotic. so if no responce
to medicine will have to investigate her further as per your Doctora advise. Thanks