 After the war, McKenzie retired from films to raise her two children.In the 1950s, she traveled to New York to study with Lee Strasberg at the Actors Studio, appeared on radio shows with Groucho Marx, and toured with the songwriter Harry Ruby.She appeared in the television series "The Millionaire" (1959) as Ruth Spencer and "Mr. Lucky" (1960) as Sheila Wells, and "Bonanza" (1961) as Victoria Gates.