Respected user , hi I evaluated your query thoroughly. *Pus cells in urine give rise to systemic symptoms like fever, malaise, body- ache, chills, pain lower abdomen , burning micturition , loss of appetite , in more complicated cases involvement of kidney & many more symptoms. *In your case, as per review of reports there is good clinical response to treatment. *Reason of fever is still presence of low grade bacteremia in body , causing host immune cells to raise the body temperature to fight against infection organisms. *Don`t take stress maintain her hydration levels by giving plenty of boiled water, coconut water, home made juices, butter milk,rice water etc. for faster recovery along with current medications of the Dr. Hope this clears your doubts. Thanks for using Health care magic & keeping trust in our medical services. Wishing your Angel fast and speedy recovery. Feel free to ask any health related query in future. Regards. Bye dear take care.