It's a good portrait. The lighting, composition, facial expression and so forth are all good. The only change I would suggest would be to allow just a bit more room under the chin. that would keep her chin from being just a little tight against the bottom and also raise her eyes a bit more above the center if the image area.
In my own experience, I've found that preparing an image for printing and for for the web require slightly differing adjustments. All that's lacking in the shown version a just a little contrast.