In 1936, Theodoropoulou left the Hellenic Conservatory and began teaching at the National Conservatoire. In 1936, when Ioannis Metaxas assumed his dictatorship over Greece, he suspended activities of the women's organization. Women funneled their activities into the war resistance effort to the occupation and Theodoropolous, as she had in other conflicts, volunteered as a nurse. In 1946, she became the president of the newly formed Panhellenic Federation of Women () (POG), which was developed to bring all of the women's organizations together and counterbalance left and right positions. The POG organized a conference held in May 1946 with 671 delegates coming together in Athens, but within months the Civil War erupted and Theodoropoulou resigned because she felt that the women's movement should be non-partisan. She was forced to sign a loyalty oath in 1948 because of her previous involvement with communists and the secret police kept dossiers on she and her husband between 1949 and their deaths, which were not destroyed until 1989.