It is very probable that yes, you have liver stones that are shifting about because they have shrunk thanks to the salad and ACV.
Your friend may have both Gallstones and liver stones . I've seen many posts in the Liver Flush Support Forum from people who have seen a doctor, received a clean bill of health from all the tests, and then flushed out garbanzo-bean and walnut-sized stones that could only have come from the gallbladder. Since she's experiencing pain, she really should start taking stone dissolvong agents rather than just dive right into a flush. Have her read the liver notes in the FAQ and start at least two of them and hopefully she'll start feeling fine! :)