Dear Ninenine,
I would definitely get a second or even third medical evaluation and opinion. I know people who had the surgery and were glad they did, but I also know people who had it and wish they'd never done it because they felt worse than before. One close family friend even became addicted to pain medication after his surgery. I'm not saying that to scare you, like I said, I know people who benefitted from the procedure. I think it depends on the extent of the problem and also making sure you have a really fabulous doctor who knows exactly what they're doing and explains things in a way you can understand so you can make an informed decision.
I really wish your mom the best!