Upload & Sell: On
It's a lovely photograph and a good memory to catch.
However, the light is too harsh. A simple diffuser (a sheet) across the window would have softened the light and made it glorious.
I think, given the subject, eye contact would have been appropriate. But, she's your granddaughter and it's your relationship! (You could play on the relationship and look for those moments where she is a little more dynamic and she might not look quite so rigid and stuffed! Turn it into a game )
Lovely young lady, Ben.
I like Scott's and Kent's re-works and must also agree with Paul - somehow she does not appear 'natural' - she is doing a wonderful job of being your subject while (I suspect) not being herself.
That said, still a great family capture which I am sure you all will enjoy.