Well executed portrait. Nice lighting. Beautiful bokeh. (What lens did you use?)
Only nit I have is, she seems to be leaning back a bit too much. (Maybe if you cropped a smidge off the bottom it wouldn't be as noticeable.) (No that won't work because then you would be chopping off the hands.) Tell her stand straighter next time.
I disagree about the leaning back. It looks natural because when we cross our arms we generally lean back a little.
I'm just imagining what the portrait would look like if the background were in key with her outfit. I usually try to use high key backgrounds with high key clothing to make the face stand out more. But this really is a beautiful portrait.
