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. After the conflict ceased, Theodoropoulou resumed her participation in IWSA conferences, attending the conferences held in Amsterdam (1949), Stockholm (1951), Naples (1952), Colombo (1955), Copenhagen (1956), and Athens (1958). In 1952, Greek women finally won the right to be full voting participants. She retired from teaching in 1957 and from the League for Women's Rights in 1958. During her later years, she worked as a music critic, publishing in newspapers and magazines, and after her husband's death in 1961, she organized their archives. Theodoropoulou died in Athens on 20 January 1963.