Yes, she had an MRI. She is presently seeing a “pain specialist” which is not addressing the fubar nerve. I’ve asked her to see if her GP can recommend someone in the medical field that deals specifically with the nerve. She has an electric ‘stimulator’ that helps while hooked up bit, like acupuncture, stretching, etc., the relief is temporary at best. The tennis ball suggestion above helps but it is also temporary at best.
I went to a pain specialist for my back and he refused the MRI. It's well documented that in older folks the presence of disc bulges and hernias is almost guaranteed (always thought someone should study what the 5-10 % of seniors with no disc pathologies did to attain that state, besides have good genes). Also well documented is the fact that many people with disc pathologies have no symptoms. Also documented is that knowledge of disc pathology can unnecessarily make symptoms worse. Ask Von Meister about "nocibo." My pain guy insisted on completing a full round of PT before any imaging or more invasive remedies (ie, steroidal injections). As long as there was any improvement at all, no MRI, no further RX. He did recommend the TENS treatment which I did not like and found of little value, and acupuncture which I did not try. All those things are for temporary symptom relief. The PT is the cure. Mine started with the McKenzie, back extension, cobras, whatever you want to call them. Moved to more strenuous body weight exercises- planks, side planks, bridges, bird dogs, dead bugs, supermans. Stretches for hamstrings and piriformis. Now I've added barbell. OHP, squats and DLs. Toddler weights, but significantly more than what I did before which was nothing.
John how active is your wife? How dedicated to her PT? If she's lazy and hoping for a pill or shot to cure her in lieu of the hard work of PT, she might be in for more disappointment. Before my back problem I went to the PT for a neck issue and when it wasn't improving he asked, "How often are you doing the exercises?" I said, "Once or twice a day." His reply, "Do them 3-4 times a day." When I injured my back it was late December 2019 and we went to distance learning in March. That gave me a lot of chances to do the exercises which I wouldn't have had if I were working at the school site. Still, it took 6 months of hard work, but I was diligent about the exercises. Still am. Cure is ongoing. Still have some pain but am back to surfing a shortboard. Well, a 6-6, but if you grew up like me in the 70's 6-6 is a shortboard.
One last thing I will say, which might get push back from some here, is that when the exercises or the frequency of them made my back worse I would, on the PT's advice, turn it down a notch. Havoc is convinced if I would have just deadlifted 2x my body weight I would have been cured overnight.
Good luck to your wife!