[6] While in New York City, she worked at the United Nations in their press department, and served as an editor for a weekly newspaper, India Abroad.
[7][8] Trehan left the magazine to her brother's stewardship in 1977 during her pregnancy, and returned to New York to start her family.
[6] In August 1994, Madhu Trehan took the rare and only interview of Yakub Memon who was convicted in 1993 Bombay bombings.
[11][12] In 2009, Trehan published her first book, Tehelka as Metaphor: Prism Me a Lie, Tell Me a Truth, examining the 2001 Operation West End exposé and its aftermath.
Three days after being found in contempt of court, Trehan and her colleagues apologised to the justices, and their apology was accepted.