Nice composition, great expression and good depth of field control. Maybe the face needs a touch more light on the right hand side or possibly the lightest fill-in flash to get the highlight in the eyes and to bring the dress forward in the picture. My main concern is that given the challange subject, the child is most important element of this photo and the fence is somewhat secondary.
Midtones are a little bit too dark here. Also? If this was a set-up shot? That hat looks too small for her head and the dress seems out of place with your more simplistic fence and glowing orange lighting. I'd try plain white, or anything without a pattern. That being said, this is a cute portrait for the album. Wonder how it would look in black and white.
Good shot. I would have liked to see a little more light on her face. Maybe if you had her turn her right just a tad but keep her eyes pointed toward the camera??