I think this shot of her is stunning...more because of the intensity on her face than anything. As far as looking "deformed" due to her ribs, ok, maybe chomp some chow a little bit more, but what else do you want her to do?? Remove a few ribs??
I think this is a really good shot, except for her "deformed ribs". I do however realize that they look that way because of the position she is in and the way she is arching, not because she is skinny or needs to eat more. If she were not doing so, she would look normal, she just badly positioned herself.