[3] Her grandson was Richard P. Mills (aka Grimnir Wotansvolk / G. Heretik, owner of the American National Socialist black metal record label and distro "Vinland Winds") who died in mysterious circumstances (drug overdose) on August 28, 2006.
[4][5] During World War II, Ms du Pont Mills served as a volunteer flight instructor for United States military pilots at an airfield on Long Island, New York.
The foundation, which remains in operation, is primarily involved in supporting youth with donations made to social service organizations for the direct benefit of children.
In 1949, she and her husband settled on a country estate in Middleburg, Virginia, where they maintained Hickory Tree Farm and Stable, a thoroughbred breeding and racing operation.
Trained by Woody Stephens, Devil's Bag was voted the Eclipse Award winner as American Champion Two-Year-Old Colt of 1983 and a favorite for the 1984 Kentucky Derby, However, the horse had to be retired after sustaining an injury.