Pot is not addictive so don't sweat her like it is. There might be another reason she avoids sobriety. Go easy if anything happened recently. If she just want to be a stoner, then welcome to America, she can if she wants. Be ready for her to exercise her rights. Yours do not include infringing hers, even if she is breaking the law. You're a friend so go get beer. Not intending to give you shit or sound like it but its not as bad as you think. I used to be real uptight about smoking in general but a few badas girlies and a wife who smokes got me past that shit. Now the wifey smokes both, no bigee for me, don't let it be for you. Good Luck.