Hmm. I'm the guy who took the photo in this blog, and while it was indeed only steps away from the Lincoln Memorial, I would be surprised if this young girl was involved in the activities described here. She sat alone, apparently sulking, was approached by no one, and made no eye contact with anyone, during the period I wandered around the monument and the Vietnam Memorial. Maybe I'm naive, but I had the impression she was grumpy that her out-of-town family made her come along to see the tourist sights, rather than letting her spend time with her friends...
Ed