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She was "discovered" in 1970 by Robert Altman when he came to Houston to direct Brewster McCloud. She was selling cosmetics at Foley's in Northwest Mall in Houston. Sister of Stewart Duvall. Daughter of attorney Robert R. Duvall (not the actor) and Bobbie Crawford. Was the host of Shelley Duvall's Faerie Tale Theatre and played the character of Rapunzel in Rapunzel and the part of the Miller's daughter in Rumpelstiltskin. Studied at South Texas Junior College. Milos Forman wanted her as Nurse Ratched in One Flew Over the Cuckoo's Nest.