Liga de Muchachas Alemanas
Becker was born in Neuteich, Free City of Danzig (today Nowy Staw, Poland) to a German family. In 1936, aged 13, she joined the League of German Girls. In 1938 she became a cook in Danzig. In 1939 the German army arrived in the city, and Becker reportedly adapted successfully to the new situation. In 1940 she began working for the firm Dokendorf in Neuteich, where she was employed until 1941, when she became an agriculture assistant in Danzig.