Ok, I'll submit to the lighting and everything being good, but I just can't get over her face. It's not that she's got a bad face, it just seems poorly posed. The way she's looking to her right with her eyes, and left with her head bothers me. It's as if she's posing then looking to the camera as if to as, "Does this look right, because I feel wierd?" Maybe it's just me but I think this stands out a bit.
Otherwise it's a fine photo. Hope I didn't burst your bubble to hard.