
Lunt grew up in Mount Vernon, New York. Her father was an attorney and a judge. She graduated from Hood College in Maryland and later earned a master of social work degree at Simmons College in Boston and a doctorate from Harvard University. Lunt then became a social worker at Massachusetts General Hospital and began a psychotherapy practice in Cambridge. She only worked with women patients.
Lunt was a political activist for women’s causes and active in the National Women’s Political Caucus and the Boston-based nonprofit, Our Bodies, Ourselves. Dr. Lunt taught in the social welfare and law program at Boston University from 1965 to 1978 and earned a law degree at the Massachusetts School of Law when she was in her 60s.


