Hi Maria,
If it weren't for all your health problems, your life would probably be boring, so look on the bright side
OK, I have 2 suggestions. Instead of a choke collar, get a noise maker. Dogs hate noise. You can get something as loud as a child's whistle or perhaps one of those New Year's blow things... anything that makes a loud sound, even a clicker, and just use it whenever she exhibits a behavior that you don't want.
Second, and this is going to sound ridiculous to those who haven't tried it but... look on the web for earth magnates. They used to sell them in golf stores but not recently. They are great for tendonitis. Tape them to your skin at the sight of your pain, via the instruction, nightly. For severe pain, you should begin to see results in about 2-3 weeks, for less, just 1 or 2 nights could do the trick.
Earth magnates have a very high gauss for their size (about a dime) as opposed to those little ones you find in various stores and it's all about the strength (gauss). All magnets are not created equal. The premise is the magnets attract your blood to the sight to promote healing.
If you can't find and want to give it a try, let me know and I'll see if I can find them. I know pain sucks and this is so non-invasive. I don't blame you if you don't believe it, I didn't until I tried it, but hey, what have you go to lose except the cost of the magnets?
Good luck, Dale