Before her career as an author, Marchant had a 40-year law career. In 1940, she was appointed assistant in the
Law Library of Congress in the Latin American Law section. When the man who was head of the Anglo-American Law Section was drafted in
World War II, Marchant took his place. When he returned in 1945, the man took his position back, and Marchant refused to work a lower job. Naiad Press was made possible when Marchant provided $2000 from her retirement income to the publishing of Naiad's first few books. The first book published by Naiad Press was Sarah Aldridge's
The Latecomer in 1974. Under the name Sarah Aldridge, Marchant was the author of fourteen literary lesbian works, eleven of which were published by Naiad Press.
Naiad Press went on to become the most successful lesbian publishing house. Marchant served as Naiad's President from its inception, up until the mid-1990s. In 1992, after a publishing dispute, Marchant and Crawford left Naiad Press. They took with them the existing stock of all Sarah Aldridge books. After their departure, Marchant and Crawford founded A&M Books. They mostly published the remaining few Sarah Aldridge books, along with works from other authors, such as
Ann Allen Shockley. == Personal life ==