Thornton, who started to work as an actress in 1990, is the sister of actor John Thornton. She was in the music video for "We Didn't Start the Fire" by Billy Joel. (1989) [1] the television drama Fine Things (1990, with George Coe, Dakin Matthews, and Randy Oglesby), the family western The Giant of Thunder Mountain (1991), and the fantasy drama Defending Your Life (1991, with Michael Durrell, Julie Cobb, Time Winters, Marilyn Rockafellow, George D. Wallace, Leonard O. Turner, Hal Landon, Jr., and Arell Blanton).