By the end of 1935, Januszewska had closed her practice, but continued her social work. In 1937, her work was rewarded with the Knight's Cross of the Order of Merit, Austria's highest honour. Within a year, however, Austria was invaded and annexed by Nazi Germany. Januszewska found herself a victim of its racial policy. Her Graz apartment was confiscated in 1940, and she was forced to move to Vienna, from where she was deported to the Theresienstadt concentration camp. She died there on 2 March 1943, aged 76.