HOLYOKE — Lyn Horan’s 71-year-old mother, Carolyn Lyons, once dated a 78-year-old man. When Lyons learned he was married, she ended the relationship. “I don’t date married men,” she told him. After making threats, the schizophrenic man showed up at Lyons’ door with a gun. He pressed it to her head and pulled the trigger. […]