On 6 April 1943, when Kitty was 16, she and her mother arrived at Auschwitz. They found jobs working with dead prisoners, which was less physically demanding than jobs outside the camp. To aid in their survival, they took items from the dead, and traded those and other items with other prisoners. At one point, Kitty became ill with typhus; she is of the opinion that the typhus immunisation that her father managed to arrange in the Lublin Ghetto may have been responsible for her recovery. Throughout their imprisonment, Kitty maintained a variety of jobs, including that of night shift worker responsible for sorting through the confiscated possessions of prisoners arriving by train.