Looking for Bfamily.female baby born 02/03/64

My mother was born 02/03/64 and immediately put up for adoption. Have been looking on and off for years. Born in Brooklyn and adopted through Spence Chapin. Her mother was around 27, went to a Greek Orthodox church, worked in a candy shop, and had an older sister who had a child. Father was much older and a Russian immigrant. At least just want to verify ethinicity and speak with any possible relatives about family medical history.