She left acting after her 1960 marriage to actor Donald Harron. Following her divorce from Harron, in the 1970s Leith resumed her career and appeared mainly in television shows, including Starsky and Hutch, Barnaby Jones, The White Shadow and Baretta. She left the screen again in the early 1980s.[2]
According to her husband Don Harron, she had a brief affair with model Barbara Freking prior to their marriage.[5]
Leith died on November 4, 2019, at the age of 94.[6] Upon her death, her body was donated to medical science at the UCLA Medical School.[citation needed]