Her father, originally from Canada was a physician[1][4][5] and a devout Methodist, who encouraged his children toward humanitarian service, inspiring Dingman and her younger sister, Helen, in their careers.

[8] She was awarded the Adolphe Max Bourgmestre de Bruxelles Medal by Belgium and in 1919 was honored by the French government with the Jeanne D'Arc Liberatrice du Territoire and La Victoire Restaure le Droit plaques for her service.

Working with a group of women and the Shanghai Municipal Council, regulations were drafted to change the existing labor laws, but they were not adopted because of clashes between the Kuomintang and the civil authorities.

[12] Over the course of her fourteen years as Secretary, she traveled to more than forty countries throughout Australia and New Zealand, East Asia and Europe, creating educational programs for women factory workers.

[13] With the outbreak of World War II, Dingman returned to the United States in 1939, settling in Berea, Kentucky, near her sisters Helen[14][15] and Jeanette, mother of future Nobel Prize winner, John B.

[16][17][18] She left the presidency of the PDCWIO, though she continued to lecture and tour, speaking on pacifism and improving international relations[8] on behalf of the YWCA.

[15] As a field worker for the Women's Action Committee for Victory and Lasting Peace, she lectured to bring public awareness for the organization and advocating for congressional authorization.

[12][21] She attended the inaugural conference of the World Federation of United Nations Associations in 1946 and in 1948 was appointed a consultant by the UN to work on behalf of the International Union for Child Welfare.