[2][3] Her sister Gertrude Sumner Ely was a noted philanthropist, who was twice awarded the Croix de Guerre for bravery in World War I.

[2] In 1916, she was in the "cordon of honor" at the Atlantic City Suffrage Convention, welcoming President Wilson to the event.

[11] Tiffany served on the executive committees of the New York Infirmary for Women and Children[12] and the Sunnyside Day Nursery.

[15][4] Carrie Chapman Catt and Charles P. Howland spoke at memorial service for Tiffany in New York.

"[16] She left the bulk of her estate to her sisters and to the Bryn Mawr College alumnae association.