wow, she is little!!
I'd guess from her second picture that you could still take weight off of her. Can you see any of her ribs? It's great you're working on this, it will help avoid joint problems in the future.
If she is acting like she is starving to death because you are limiting her food there are a lot of fillers you can give her to make her feel full. Post in the nutrition section and you'll get plenty of responses!
Inside me is a thin woman trying to get out. I usually shut the bitch up with a martini.