Bolli is Telugu word for a skin condition vitiligo
. It is an auto immune disease and curable to large extent.
As your niece is having two lesions only, chances of her having re pigmentation in these lesions are high. I would like to dispel your doubt that it has increased due to medicines. Right now as there are two lesions only, topical treatment is enough to treat it. Kindly continue with the medicines prescribed at least for two to three months to see good results.
Hope that answers your query. Take care.