A Whitehorse jury found Christina Asp guilty on Friday of second-degree murder in the death of Gordon Seybold.
Asp was charged with first-degree murder for the 2008 killing. Seybold's body was found in the burnt-out remains of his Ibex Valley home.
During the investigation, undercover police officers convinced Asp they were recruiting her to work in their criminal organization and she told them she battered Seybold with a baseball bat before her boyfriend set his home on fire to cover their tracks.
The trial heard from more than 80 witnesses over the past three months.
Second-degree murder carries a mandatory sentence of life in prison, with eligibility for parole after a period of between 10 and 25 years.