Beautifully posed and beautifully shot. And beautifully lit. It's simple but it does something really hard (well, I think it's hard) -- create a 'feel'.
Thanks for the comments. One of my favorite parts of photographing people in general, women in particular, is watching their normal body language and movements when they speak, and building those characteristics into their photographs. It allows them to look like their natural selves, but tweaked just a bit for the camera.
I think part of the natural language is from you, I think if I were in the room there would be a different reaction and movement, very nice, very beautiful but also calming.