My fear would be that there could be a blockage of the GI tract in your girl from a piece of the rib bone. I would at the very least, make sure she stays hydrated. You can give her plain pedialyte via dropper if she will not willingly drink it. If she is having diarrhea along with the vomiting, I would call the vet immediately. If the symptoms that you are seeing continue over the next few hours, I would have her seen, as dehydration can make the problem worse.
The problem with bones is that they splinter...even the ones you buy at your local pet stores. They can cause blockages or damage the GI tract while going through the digestion process. You might want to consider treats like Bully Sticks or filled Kong toys in the future :) Good luck with your girl and I hope she feels better soon :)
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