Miller was married three times, the first two ended in divorce. Her first husband was film director Tay Garnett and the second was screenwriter John Lee Mahin. Her third husband, businessman E.S. Deans, died in 1986. The frequent news about her love life once earned Miller the sobriquet the most engaged girl in Hollywood.
Patsy Ruth Miller died at her home in Palm Desert, California in 1995, aged 91.