Gabriele Bernstein lived with her mother , the widowed Irma Bernstein-Frank (18.12.1890 in Berlin), at Eisenzahnstr. 3 in Berlin-Wilmersdorf. Gabriele -- and presumedly her mother--emigrated from Germany to Barcelona, Spain in the earlier 1930s. They arrived in Amsterdam on 1. March 1937. (Jewish Addressbook Berlin 1931, Amsterdam City Archive Card)
If anybody knows more about the fate of her mother, I would appreciate being contacted.