That's because he's out at the bars and casinos until 3 AM.
If there would have been anything of that, I would have noticed.
No offense, but again if he's out at the bars and the casinos regularly until 3 AM, she has no idea what he's up to. He may not use drugs because he considers himself an athlete, but she'd have absolutely no way of knowing given the lifestyle he's been allowed.
It was a desperate and bad move on mamma's part, IMO.
This is a case of good parental supervision on part of the VDS's. NSNR