I'm really really hate to say it but I agree with Margaret. Crying and hiding are not simply her habits, there are a sign she's not feeling well. This must be awful for her and you, I cannot give you my opinion of how I would process or timelines because #1 I have never been in your shoes #2 only you in your heart knows what is best for her and you.

I only wish to provide some loving support from another cavalier owner who fully understands how special these dogs are. You have done and are doing a wonderful job advocating for Shiloh. Believe me there are plenty of dogs suffering with her level of pain that receive no medical care e.i. puppy mills