Looks like a doozy to me. Keep in mind that is my opinion and it's as scientific as it sounds. (I far from being a doctor.) Spine Health members can only give advise based on personal experience, but I suggest that your mom see a neurosurgeon and on orthopedic surgeon for a few opinions on what her options are. I had pain that sounds similar to your mom's pain and I had a fusion. There are others here who will tell you the same thing about the pain, but will have had other treatments. Has your mom tried any treatments such as physical therapy, injections, medications? Check out this link that can help you understand some of the information you may run into.

http://www.spine-health.com/treatment

This is a great forum for support and there is a ton of great information on Spine-Health to help you figure out how to get your mom some relief., Talk with your doctor and let us know what you find out.

This is just my opinion, but it sounds to me that your mom is dealing with sciatic pain. when there is a herniation at that level, mine was L5-S1, it can pinch the sciatic nerve that runs down the leg and into the foot. For me, this caused severe electric like pain from my hip to my foot along with some numbness and tingling. Whether or not she needs, or opts for surgery is up to her and the neuro. I eventually had the surgery because I was starting to lose feeling in my foot altogether. As you can see in my signature, I have since had a lot of problems. It is different for everyone and they may have her try some less invasive treatments first like I did. These would be things such as epidural steroid injections to try to reduce any swelling, physical therapy, or trigger point injections. I personally would highly suggest trying all of the things available before jumping right into surgery unless of course the neuro says that is the only option or something. You definitely want to listen to the neuro but at the same time, if you and your mom don't feel totally comfortable with what they say, don't hesitate to get a second opinion. Please feel free to pm me with any questions if you feel i can help you in any way. You have come to a great site. Many people here have been through this and can offer some very good advice, the operative word here being advice. None of us can tell you or your mom exactly what is right for her but we can at least let you know what we have tried. Take care and I will keep your mom in my prayers along with all the other spineys.

Your question can really only be answered by her doctor but unless there is a risk of permanent damage they will normally try all of the conservative steps first. That is great that you are being so supportive of your mom. If you need support for yourself do not hesitate coming here as we are pretty good at supporting one another. Good luck and let us know how your mom makes out.