[3] According to an article published in New Directions for Women in the winter of 1976-77, after graduating, Kassell pursued a job as a social worker, and continued to work until she got married and stayed home to raise her two children.
[3] In 1971, she became one of the co-founders of New Directions for Women and used money raised by its inaugural May 1971 conference to create a magazine that she edited out of her home together with other volunteers.
[4] Kassell bought shares of The New York Times and attended the company's April 1986 shareholder meeting, where she spoke about the inconsistent use of the titles "Miss" and "Mrs." used to refer to women and the fact that this usage created confusion and inaccuracies about the marital status of those women mentioned in the paper.
Arthur Ochs Sulzberger, the publisher of the paper, agreed to look into the issue and make a "rational decision" on the topic after discussion with usage experts.
[3][7] She remained involved with the Morris County, New Jersey, chapter of the National Organization for Women until her death.