After Lotte left Dortmund already in 1935 to travel to an aunt in Utrecht, Netherlands (against the will of her father), the rest of the family joined Lotte on 30 April 1938, who lived at that moment in Amsterdam. Lotte was already engaged to Robert Pollack, who together with his father and brother ran the well known lunchroom and ice-saloon "Delicia" on the Beethovenstr. 55.
Lotte organized an apartment for her parents and sister next door on Beethovenstr. 67.