Dear Jonah,
I know exactly what you are going through. Just reading your despiration makes my cry. I just lost my Rhette sunday and unfortunately after the fact, found out that his death might have been prevented. You need that MRI. It shows not just bone, but organs, ligaments and other tissues not picked up be xray or Ult. SEARCH THE WEB. I wish that I had. Boxers are prone to certain diseases, and that might help narrow things down. I pray you find whats been ailing her. Toya sends (((wiggles and sloppy wet kisses))) and I have asked Rhette to look down from above and help keep Lexus safe and pain free.