The Waigani National Court convicted Lucy Jacob after it found sufficient evidence she stabbed her husband on his chest with a knife, which led to his death.
All witnesses who gave evidence in court said the couple had been arguing that afternoon while traveling in a PMV.
It was also put before the court that the couple had been consuming hard stuff and coffee punch on that PMV since they left the Erima Service Station.
The court however, accepted that she stabbed her late husband with the knife with intent to cause bodily harm to him after he tried to beat her up.
