In 2009, Diane co-founded the Walt Disney Family Museum with her son Walter Elias Disney Miller, who is a movie producer, and Disney was also the President of the Board of Directors of the Walt Disney Family Foundation at the time of her death, which is a nonprofit organization that owns and operates the Walt Disney Family Museum, located in Presidio in San Francisco.
Pada tahun 2009, Diane mendirikan Walt Disney Family Museum bersama putranya Walter Elias Disney Miller, yang merupakan produser film, dan Disney juga merupakan Presiden Dewan Direksi dari Walt Disney Family Foundation pada saat kematiannya, yang merupakan organisasi nirlaba yang memiliki dan mengoperasikan Museum Keluarga Walt Disney, yang terletak di Presidio di San Francisco.