[citation needed] She began acting in TV roles from the early 1950s onwards including as Theodosia in the Life of Riley television sitcom.

[1] Throughout the 1970s and 1980s, Leonard made television appearances on such shows as Laverne & Shirley, Mork & Mindy, The Facts of Life, Knight Rider and Married... with Children.

During the 1970s and 1980s she became a regional celebrity in the Los Angeles Theatre circuit for her outrageous portrayal as a lesbian head matron in the play Women Behind Bars.

[4] Health problems (including diabetes) eventually set in and she left Hollywood in 1995, living primarily in Oregon.

She moved into the Motion Picture Country Home in Woodland Hills, California, where she spent her remaining years.