DEAR ABBY: My next-door neighbors, whom I have become close with, have three adult children. My friends admit it’s always been important for them to be their children’s friends and be the “popular” parents, enforcing no discipline/guidance ever in their children’s lives, still to this day. The 19-year-old daughter has drug and alcohol problems and recently lost control at a friend’s house while under the influence. Her parents were called to pick her up. They called me on their way home and asked if I could help to get her under control. When they arrived, the daughter was screaming and violen…