Thanks for answering my questions.
As the owner of a dog who had stones and is now on c/d myself, I can understand the frustration and confusion created when you're reading the stuff on the internet.
I know there's a lot of information out there, but my personal experience is that c/d is that it's a great dog food who has kept my dog from having a resurgence of stones in the 3 years he's been on it. Before going on c/d, he had 3 instances of stones..since then, not one.
If this were my dog, I would stick with the c/d, and skip the vinegar and cranberry. Although it's not going to do any harm, it's probably not going to do any good either.
I do understand that she's reluctant to eat it, but the biggest thing to remember is to be patient. Keep in mind that the dog has sort of gotten used to eating probably a better tasting food when it comes to her meals, and she may just take a little while to adjust to eating the c/d kibble. I promise though..she won't starve himself to death...dogs just aren't wired to starve themselves. She'll eat when she gets hungry enough (although it may take a few days)...I promise.
I hope this helps!!