She was the eldest of three daughters of Zinovy Zakharovich Rosenbaum, a pharmacist, and Anna Borisovna ().
ʃiː wʌzðɪ ˈɛldɪst ʌv θɹˈiː dˈɔːɾɚz ʌv zˈɪnɑːvi zˌækɑːɹɹˈoʊvɪtʃ ɹˈoʊzənbˌaʊm, ɐ fˈɑːɹmɐsˌɪst, ænd ˈænə bˈoːɹɪsˌɑːvnə.