This is a very nice backlit photo with a lot to recommend it. That wisp of hair across her face, coupled with the "Oh dad - not again" smile divulges a lot about her personality.
The only thing I could possibly suggest is that if you were using an on-camera light (hard to tell from the image), you might experiment with the dodge tool on Photoshop to bring up the catchlights in her eyes.
Very nice. Love the wispy hair and facial expression against the strong backlight. A small nitpick might be to have a bit more space above and below -- something more square, less horizontal. Not sure that catchlight (in the eyes) would make it any better due to the nature of the image.