I think you have done all you can, have been working with your counselor and the dean, etc. so I think you have to have faith it will work. If it doesn't work, it doesn't work, it is not the end of the world. I was thinking, reading your post, maybe an online university where you had papers to write instead of so many tests, etc. and not quite as much stress might help if this doesn't work? I would have a "Plan B" (and maybe C and D :-) of other things to try to both finish your degree now or do something else for awhile and finish it later.