 Jason DeRose, NPR News. Her career in movies, including roles in The Shining and Nashville, where today actor Shelley Duvall has died. Duvall's death was confirmed by her longtime partner, Dan Gilroy, who says the actor died in her sleep at her home in Blanco, Texas. According to a publicist, the cause of death was complications from diabetes. Shelley Duvall was 75 years old.