Morgan had published three books of fiction as of 2015. Her debut novel was the semi-autobiographical "Dry Your Smile" (published by Doubleday & Company, 1987), followed by "The Mer-Child: A Legend for Children and Other Adults" (published by The Feminist Press at City University of New York, 1991). Her most recent work of fiction is a historical novel titled "The Burning Time" (Melville House Books, 2006), set in the 14th century, based on court records of the first witchcraft trial in Ireland. "The Burning Time" was placed on the Recommended Quality Fiction List of 2007 by the American Library Association, in addition to being the 2006 Paperback Pick by Book Sense (The American Booksellers Association).