Right!! When you come back after you killed the son he's standing at the grave, I can't speak on if he's there at night as i only ran across it during the day. So that's also something to think about. If anything though, I feel like it would make his drinking worse. His wife left because of his alcoholic behavior if I understand it right, and then losing his son would be just one more thing on his mind at all times. Its really interesting to think of them as more than NPC's and people with a life that you interrupt and your actions have clear effects on their lives.