Well, the problem with that is the people who received the pictures might not know she's under 18. I mean, although her pictures may scream "hey, I'm not that old," I know when I was 18, I went to a girl that I thought was maybe like 17, 18, or maybe the lucky stroke of being 19 (you know, cuz it was cool to date older?) and we hung out that whole night until late as hell, and I went home. Couple days later, I called her up and was like "Hey, let's go do something...drive over hear, and I'll drive the rest"
Her reply was "Drive over there? I don't have my license, yet..."
...never called her back...
Since then, one of the first things I ask is, "so how old are you?"