She married George Mifflin Dallas in 1925. They had three children: Constance Hopkins Dallas, Edith Wharton Dallas, and George Mifflin Dallas, Jr. Her husband was descended from a Philadelphia family that included his namesake, George Mifflin Dallas, who was Vice President of the United States from 1845 to 1849, and Alexander J. Dallas, who was Secretary of the Treasury under James Madison. He worked as an executive of the American Briquet Company, and Dallas devoted the early years of her marriage to child-rearing and keeping house, as well as volunteering at Pennsylvania Hospital.
