Victoria Scott, 23, claimed she was defending herself in February of 2017 when she stabbed Edwin Littlefield.
The two had been at a friend's home in Waldo when they got into an altercation.
Scott said Littlefield had pushed her to the ground and was choking her when she stabbed him several times in the leg.
The prosecution said it actually was Scott who was being aggressive toward Littlefield and that she followed him outside to the driveway, where she confronted him and got into a fight.
Littlefield died from blood loss.
Scott was scheduled to undergo sentencing at 1 p.m. Wednesday in Belfast. Her attorney has indicated he plans to appeal the verdict.