She looks gift wrapped, but it appears someone already took a peek to see what they were getting.
Excellent use of light, or the lack of light. I'd say the right amount of highlight. The amount of shadow makes this seem as a real moment in the sense of: you could easily remove the camera and there would just be a man (or woman) sitting there anticipating the next move. I am not sure if that is what you intended.
If there was something I would like to see different in this image is perhaps have the window blind down to have the light cut in slices. There would have to be a good amount of distance though or the shadows would be harsh and note quite as diffused.
As always, it is one hell of a shot. I figured I'd try the critique thing.