It sounds like you are doing everything that you can, but until the doctors can find out what is causing the pain, there is not a lot you can do to actually stop it from happening, and just masking it with pain killers like she is doing is maybe all you can do right now.
Once they are done with the tests, you should know if it is all coming from the muscle injury, or whether it is caused by her arteries being clogged again like happened when they had to do the stents before.
It might be the peripheral neuropathy from the diabetes causing the pain, or a combination any of these , or something else that you have no idea about, that is making the muscle injury pain worse.
Hopefully, the tests that her doctor is doing will give you some good answers, and then they can help you guys plan out a treatment to stop whatever is causing the pain so she won’t need all the pain medication or be in so much pain all the time.
When I had the pulmonary embolism, I thought it was a pulled muscle injury my ribs from yard work, but instead of getting better, the pain just kept getting worse and worse, and finally, I could barely even breathe becasue of the spasms of pain in my side, and Bobby took me to the hospital ER.
When they did tests, it turned out to be a blood clot in my leg that had moved up into my lungs , and could have killed me if we had not gone to the hospital.
They gave me blood thinners to dissolve the blood clot, and then the pain went away.