 In fact, for the last few years of the radio show, she pre-recorded her lines and Jack and Mary's daughter, Joan, stood in for the live taping, with Mary's lines later edited into the tape replacing Joan's before broadcast.Mary Livingstone finally retired from show business permanently in 1958, as her friend Gracie Allen had done.Benny's television program relied more on guest stars and less on his regulars than his radio program.