She worked to develop a textbook series for missionary summer schools and women's study groups.

[2] Peabody was an important member and primary instigator of the Committee on Christian Literature for Women and Children in 1912.

Part of the Interdenominational Conference of Woman's Boards of Foreign Missions in the United States and Canada, the committee distributed magazines around the world.

Peabody and Helen Barrett Montgomery were delegates to the Edinburgh Continuation Committee in The Hague in 1913.

In 1916, she played a key role in transforming the Interdenominational Conference into the Federation of Women's Boards of Foreign Missions.

[2] After World War I, Peabody's views correlated with that of the Northern Baptist Convention fundamentalists' moderate wing.

[1] She opposed the repeal of Prohibition and was president of the Women's National Committee for Law Enforcement for over 10 years.

[2] Her presidency ended due to opposition to women in leadership and disparate theological views.