Been with my wife for 8 years and just found out she is letting her daughter that’s 13 years old use marijuana. Mind you that I’ve been in this child’s life since she was 5 years old. What’s worse is that I found out that my wife’s son who is 18 is the one getting it for her. She also let him use at that age. 90% of our arguments are because my wife is not strict enough with her kids. I just don’t know how to handle it anymore. I’m conflicted at all angles and would appreciate some advice.