In 1941, during World War II, the NDH began to implement race laws that prevented Rubinstein from singing and performing.

[citation needed] She was buried in the family tomb with her husband Bartold in the Jewish part of the cemetery Sv.

[2][3] Rubinstein completed elementary and high school in Zagreb and graduated from the University of Music and Performing Arts, Vienna.

Before World War II, because of the views of her husband's family, she performed rarely at the Croatian National Theatre in Osijek.

Among her major roles were Violetta in Verdi's La traviata, Cio-Cio San in Puccini's Madama Butterfly and Bula in Ero s onoga svijeta by Jakov Gotovac.