I suggest that she would look a little more natural holding that book if her fingers where closer together. think how most people hold books in this exact way. actually why not just pick a book up really quick and see how far apart your fingers are.
Love it. I know the eyes have been commented on, but it bears reapting. Wish you'd just kept it safe for work too, two desperate pics would've been nice. Otherwise, it's a pretty picture. Well done andkeep at it. ^^