Genealogy / Tatarewicz, Bogdanowicz, Piskunowicz (looking for) [9]

Hi, I am looking for my polish relatives. My mother was born in Lwow in 1916. She was the youngest of 7. Helena Tatarewicz. She left Poland in 1944. I know of one older sister who's married name is Berlinski. Can anyone help?

Thank you ....lisa