“I’d have thought you’d want her arrested for being drunk.”
You make a good observation there, but as you know my main reason for opposing drug abuse is that it endangers others, whether we pretend it doesn’t or not.
So I think child endangerment is more to the point.
I know that's what you've said, but there are laws against child endangerment, just as there are laws against DWI.
There's a difference between arguing that DWI should be illegal, and arguing that being drunk should be illegal because you might get in your car and drive.