I had similar hip, back, and groin pain. Can’t remember exact diagnosis but part of the diagnosis involved my Sacroiliac joint.
Bottom line is I endured a 2 day back surgery where they also fused the SI joints. That was 8 years ago and I am SOO glad I endured it! If you’re interested in more info I would gladly look for my medical reports and give u more details like the diagnosis, procedure, the team of doctors and surgeons, where it was done, etc,
I was informed at the time that there were only a handful (3-4) of surgeons in the world who could perform all that was done.
As a result of the surgery I went from being non ambulatory and on a lot of meds because of severe pain to being able to walk as much as I want and a minimal amount of meds that gets lower and lower.
Let me know if u want more about the surgeries & I pray that your mom gets relief and answers SOON, in Yeshua’s name🙏🏻