Where do you live...? I know that Diamond
dog foods, has been recalling several brands of
dog food that they make, due to Salmonella poisoning. Is this a possibility for you? If you live in the U.S. Please do a google search on Diamond dog Food recall.
I hope that whatever is ailing your dog, is easily fixed. I have to say, it does sound like it could be pancreatitis. I think you made a good choice to have her treated for it.
My thoughts and prayers are with you.