First, I used Smart Curves, I am not sure what type of camera was used to take the picture so I ran through all the options available and ended up using the settings for Sony.
Next, I used the clone airbrush at 50% transparency to clone out some of the blurred falling snow that showed up on her right cheek, inbetween her eyes and just a tiny bit of her hat. I also used it to darken her left cheek as it seemed overexposed a bit.
I entered Mask Mode and masked off her entire face, then went into Hue & Saturation and increased the Saturation to +40. That brought out the colors of the scarf and hat nicely without making it look overprocesses in my opionion.
I entered Mask Mode again and blocked everything but her eyes and once again bumped the Saturation to +40. This brightened up her eyes just enough.
Finally, I cropped the image.
That's it! Not too difficult and now there is a brighter photo of a beautiful little girl. To see more fixes, be sure to visit I ♥ Faces and see what others have done, to get there, click the image below.