Her subsequent book Salamander, coauthored with Allen Roberts, examined Hofmann's creation of an industry for forged documents, the 1985 bombing murders of two people, and the police investigation, arrest and conviction.
The murder investigation eventually revealed Hofmann's documents, initially seen as undermining the early history of the Church of Jesus Christ of Latter-day Saints, were forgeries.
After a long battle with chronic fatigue and immune dysfunction syndrome (CFIDS), Sillitoe died on April 7, 2010, at the age of 61, of an aortic dissection.
Sillitoe published two collections of poetry, Crazy for Living and Owning The Moon (Signature Books 2017); a short-story collection, Windows on the Sea; and four novels, Sideways to the Sun, Secrets Keep, The Thieves Of Summer (Signature Books 2014), and Twist of Plot (independently published in 2019).
In 2020, the University of Utah Press published One Voice Rising, co-authored with Ute elder Clifford Duncan about his life, with photographs by George Janacek.