Chervonubor's lomza district, Bialistoc
I would guess that that is going to be somewhere near Lomza (not that far from Bialystok). Let me check later when I have more time.
Sapiezynska 10a Street, Warsaw.
I nearly bought a flat on that street. From memory that building is now a hospital.
explain to me how can I get her birth certificate.
Are you looking for that so you can apply for a Polish passport? If you, you should think about a few other issues before you spend time (and money) getting that birth certificate.