I'm reading Arno Sauer's In The Hell of the Eastern Front. On page 22 he wrote that the young women also had to serve in the Reich Arbeitdienst. I've never seen that anywhere else. This was early in the war (1941) too. If they had to work, were they volunteers at some hospital or Red Cross Center? I know they had their version of the HJ called BundDeustcheMadel but that had nothing to do with digging trenches or stuff like that. Very late in the war girls were told to die for the fuhrer (which was an admission tha the Aryan Superman could not defend Germany from the Allies).
"The RAD was divided into two major sections, one for men (Reichsarbeitsdienst Männer - RAD/M) and the voluntary, from 1939 compulsory, section for young women (Reichsarbeitsdienst der weiblichen Jugend - RAD/wJ)." Reich Labour Service - Wikipedia.