A teenager I know smoked weed and drank alcohol pretty much at the same time. (First time alcohol) Since then she hasn't been herself, lots of giggling acting giddy and falling into a deep sleep no matter where she is whether sitting or standing.

She's not a content person but only those that know her well know that. Suddenly now she's rambling on about depression, suicide and addictions to anyone.

It's going on for 2 days already.

Does any of this makes sense? Why did it happen? Is it something I should be concerned about? What should I do?

Thanks