In a processing application like Photoshop, I recommend making three copies of this photo. Give the middle one a single tweak in Auto Levels to create a copy of her face with a little better contrast. The first one darken using dodge and burn tools so that the background isn't so washed out. Use Exposure and Levels to make your reflection pop in her glass. Now using cloning and selection tools combine the background from the first with her face and hat from the second and her glass from the third, You'll end up with the kind of image you'd want printed large and framed and hanging in the kitchen. If you're good at it you could always adjust her and her glasses and then mask them and place an entirely different background behind her. I did that with a photo my daughter-in-law shot of her daughter on her smart phone. The background sucked like a black hole and she clipped off the tip of the left side of her straw fedora (similar to this one) and used a different background to look like she was standing in the shallow bank water of the local river. Her father looked at it and asked when were they there? To get that photo? Great heart-tugger shot, by the way.

-Nik

Those big sunglasses of your daughters work very well here.
A sweet family photograph.