Acute pyelonephritis. She will be fine.

My mother is diagnosed with acute pyelonephritis, problem was started with acute pain in upper stomach center . Later had continues high fever like 102 and103. Sine 06th June she is getting treated in sahara hospital ,gomti nagar, Lucknow. Where they did many tests and CT then got to kNow that she has acute pyelonephritis. But since 06th June there were only two days 12 and 13 fever was not there. But most of the times fever goes and comes. Doc. is not giving any proper response when she will be fine. Not sure what to do, they have put her in HDU. DOCTOR says can't say how much time she will take and not giving any assurance. I am very depressed with this. And they charge very high, being a middle class family we are just putting every penny to save my mother,its  been more than a week we have deposited around 2 lakhs. When I ask doctor he says it will take time , and today he prescribed her protinex, am not sure how appropriate is that for her. Not sure what to do from this point. plz