I sorta get the feeling that's what's really behind the desire to blaze with her is not only to turn her onto weed but also to turn her onto you. Am I right about that? If that is the case, just keep in mind that she's a kid, no matter how grown up she may look or act. If she initiates the idea of smoking and wants to, she'll find a way to do that whether you help her or not. Just look very carefully at whether you're hoping to engineeer that situation so you can also initiate her in other areas. If you are, then you're flirting with disaster, and I think you know that on some level or you wouldn't have asked this question in the first place.