Final answer:
Leni Riefenstahl was the German woman who worked with films for Nazi propaganda, specifically for her film 'Triumph of the Will'.
Step-by-step explanation:
The German woman who worked with films for Nazi propaganda was Leni Riefenstahl. She was a prominent German film director and actress, known for her film Triumph of the Will, which documented the 1934 Nazi rally in Nuremburg. Her work is considered an important contribution to the development of cinematic technique and the documentary form.