I don't typically post about myself being stoned on FB. It's one of the few ways in which I try to comport myself as a professional. I think the booze thing, while correct, is not relevant. If I found out she was binge drinking, I'd caution her against that as well.
She's also really pretty, and seems to be surrounded by those user-asshole kind of teenage boys. That's one thing I'm glad I didn't have to deal with in high school...scores of horny boys pretending to like me in the hopes that I'd give it up.

But I digress...

She was quite insistent (as were her friends, who were more obnoxious about it than she was) that it's not a big deal. While it doesn't have to be a big deal, kids should know what to watch out for going in.