Hi, welcome to HCM. You are one of the rare few who has provided all the important details! I suspect you are a healthcare worker yourself. You are right in that your sister needs to see a nephrologist
) ASAP. She needs to have a 24hour urine protein estimation and possibly a renal biopsy
for diagnosis. The two differential diagnosis here are IgA Nephropathy
and Post Infectious Glomerulonephritis
. Only a biopsy can differentiate the two or clarify if the problem is something totally different. I am very wary of doctors treating emperically with steroids without proper diagnosis. We can prognostigate only if we have a biopsy confirmed result. However if the protenuria has settled already, we are in a dilema whether to biopsy or not?? Dont waste time and see a nephrologist pronto. I dont know who is near you at Varanasi, you will have to find out. Feel free to come back with any more quiries. Best wishes.