Kaethe was a female guard at several concentration camps during the last months of World War II.

Kaethe was born as Kaethe Becker in Saarbruecken or Herrensohr, Germany on May 25, 1923. On August 9, 1944, she began her training as a camp guard at Flossenburg near Bayreuth, Germany. Soon after she was assinged to the Baendorf subcamp of Neuengamme, and later she arrived at Neuengamme. In December 1944, Kaethe guarded a transport of women prisoners to the Zwodau subcamp of Flossenburg in Czechoslovakia. As he camp was evacuted she went to another subcamp in Holleischen as an Aufseherin. She fled the camp in early May 1945 and was never captured.