Starbuck attended the First Baptist Church, where she taught a Sunday School class. She was considered an expert on international relations, speaking on the subject frequently and belonging to the American Association of International Law. She was a director of the Katrina Trask Alliance and the Yaddo Corporation. She was a member of the American Alumni Council, the Foreign Policy Association, the League of Nations Association, the National Municipal League, the New York State Bar Association, the American Bar Association, and the International Law Association. She was also a trustee of Vassar. In 1933, she joined the Saratoga Springs Board of Education. In 1939, she became President of the Board, the first woman to serve in the position.
