I remember when his dad relapsed after 2 yrs of being clean and working a non 12 stop program. He asked his father if he was "hitting the pipe" again. Of course, his dad got defensive and denied it. He was now an 18 year old, 6'3 "man." My girlfriend said he just got up, walked over, punched his father in the gut hard enough to bring him to his knees and walked out if the house without saying a word.
Right or wrong, it's hard not to understand his pain and anger. It was at that moment, she knew it was time to go!! They were not going to live through another relapse.