Dave...Thank you for your comments. The only real goofy thing I had to do was continually set her back across the fence and then run back to the camera. It became a game to her and an indication to me that I am terribly out of shape.
You nailed the expression, Daniel. Excellent lighting, simple background. At first glance, that gap below the log seemed a little distracting, although a parent would never notice. When I look at it a second time, the gap seems to belong there. I like the deep contrasts in the clothing.
There seems to be dust on the slide, in the background above her head, which could be easily cloned out.
I've got this image of you doing something goofy to get her laughing like that. Very well done.