Your use of reflection here, while maintaining the illusion of a normal room through the placement of the corner is excellent. In addition, the tones and colors blend very nicely, and your model looks like someone that would be fun to know. As if all of that wasn't enough, the light reflected in her eyes make them sparkle!
I want to see her dance! This is a pretty portrait and you have certainly captures some of her personality but as an environmental portrait (or at least that's what I think it to be with the setting and the title) I'd like to see her dancing, or at least interacting more with her surroundings.