[3] She received a fourth HWA Bram Stoker for the collection The Four Elements, written with Marge Simon, Rain Graves, and Charlee Jacob.

She moved to New York City in 1975 with fiancé Ken Addison, and started working in the Foreign Royalty Accounting Department at RCA Records.

In 1996, Addison's short story "Little Red in the Hood" was published in Tomorrow Speculative Fiction and was listed as an Honorable Mention in the annual Year's Best Fantasy and Horror anthology (1997).

Addison took the advice and from a short story drafted a poem entitled "Why the Dinosaurs Died"; it was published in Asimov's Science Fiction in 1997.

Addison is a member of the Horror Writers Association (HWA) and has participated in panels with Harlan Ellison, Jack Ketchum and L. A.

Addison has participated in Ellen Datlow's Fantastic Fiction Reading Series at KGB Bar in New York City.

In March 2012, Addison won her third Bram Stoker Award for How To Recognize A Demon Has Become Your Friend, a collection of reprints, new poems and short stories.

Addison started a relationship with horror fiction writer Gerard Houarner in 1995; they married in 2004 but separated in 2010 and legally divorced in 2015.