 After surviving the Łódź Ghetto during the occupation of Poland by Nazi Germany, Rosenfarb was deported to Auschwitz, and then sent with other women to a work camp at Sasel (subcamp of Neuengamme concentration camp), where she built houses for the bombed-out Germans of Hamburg.Towards the end of war she was sent to Bergen-Belsen, where she fell ill with nearly-fatal typhus fever in April 1945.After the end of the war, while still in Europe, Rosenfarb married the future nationally-famous Canadian abortion activist Dr. Henry Morgentaler (the two divorced in 1975).