Notes for Regina Rothstein: According to Kaethe Beutler:
Regina was Betty's older sister; she was not very smart, but I remember that my mother felt sorry for her because she had been married to a very unpleasant man. This marriage was arranged because Betty was engaged to Felix Struck, which was considered as a very good match, and Betty was not permitted to get married before her older sister was married. Evidently, they could not find a better husband for Regina. They had one son (Erich) whom I remember as rather stupid.