Her critical anthology The Savage Humanists (Robert J. Sawyer Books, 2008) begins with a 17,000-word essay by her describing the movement and its practitioners, and collects stories by Gregory Frost, James Patrick Kelly, John Kessel, Jonathan Lethem, James Morrow, Kim Stanley Robinson, Robert J. Sawyer, Tim Sullivan, and Connie Willis, with introductions to each by Kelleghan.

[6] That essay, "A Definition of Savage Humanism, with Autobiographical Anecdotes," is reprinted as the cover story in the November 2008 edition of The New York Review of Science Fiction, and takes up most of that issue of the magazine.

[8] She has contributed to the reference books American Women Writers;[9] Contemporary Novelists [7th Edition] (for which she is the authority on Ray Bradbury, Jonathan Lethem, and Connie Willis, among others);[9] Magill's Guide to Science Fiction and Fantasy Literature; Fantasy and Horror: A Critical and Historical Guide to Literature, Illustration, Film, TV, Radio, and the Internet, edited by Neil Barron;[10] St. James Guide to Crime & Mystery Writers; St. James Guide to Science Fiction Writers; Supernatural Fiction Writers: Contemporary Fantasy and Horror; and Twentieth-Century Literary Movements Dictionary;[8][9] and, with Daryl F. Mallett, to Genre and Ethnic Collections: Collected Essays, and she was largely responsible for assisting Mallett and Hal Hall with the completion of Pilgrims & Pioneers: The History and Speeches of the Science Fiction Research Association Award Winners (Borgo Press, 1999).

In March 2008, Kelleghan presented a paper entitled "The Intimately Human and the Grandly Cosmic: Humor and the Sublime in the Works of Robert J. Sawyer"[14] at the 29th International Conference on the Fantastic in the Arts.

[15] In March 2009, she presented a paper entitled "Time and the Fiction of Robert J. Sawyer: Flash Forward to the End of an Era"[16] at the 30th International Conference on the Fantastic in the Arts.

Her short story "The Secret in the Chest: With Tests, Maps, Mysteries, & Intermittent Discussion Questions," which plays with the conventions of damsel-in-distress fairy tales,[21] appeared in Realms of Fantasy (October 1998),[22] and earned an Honorable Mention from editor Gardner Dozois in The Year's Best Science Fiction: 16th Annual Collection (1999).