A Texas jury sentenced a woman on Friday to life in prison for stabbing her boyfriend to death with the 5-1/2-inch stiletto heel of her shoe during an argument after an alcohol-fueled night out last year. Ana Trujillo, 45, was convicted on Tuesday of killing University of Houston professor Stefan Andersson, 59, who had been stabbed about two dozen times in the face and head during an altercation at his upscale condominium in June 2013. Trujillo, who had said she was acting in self-defense, did not cry when the sentence was imposed.