It seems unlikely that Dorothea only made one television appearance. Her acting was good enough for this kind of show. Maybe she went under a different name for other roles and the connection has yet to be made.
[Broderick Crawford, Ron Gans, Marvin Bryan, Jack Mann, Ruta Lee, Dorothy Crider, Marx Hartman, Eleanor Howard, Stephen Bradley, Rick Vallin, Art Gilmore (voice), Harry Wilson]