Pain Pill Addiction and Neuropathy - Looking for Guidance

I am a neuropathy sufferer, CMT, with minimal pain right now. However, my mother suffers from painful peripheral neuropathy. She is the reason I joined this group. I am looking for advice and guidance. My mother was treated by a neurologist for years and prescribed Percocet. She became addicted. Recently, her neurologist referred her to a pain clinic. Her Percocet prescription needed increased and he told her he could not do it. At the pain clinic, she was prescribed methadone. Upon her return visit, the doctor at the clinic "released" her, said she was an abuser of her pills. So, she not only is dealing with chronic pain she is suffering from withdraw symptoms from years of pill addiction. Watching this is heartbreaking. I am desperate to get her treatment for both conditions but she isn't making it easy. I am looking for suggestion for successful treatments that don't involve opioids. I was going to encourage her to try laser therapy but don't think that will be an option due to how expensive it is. Any guidance, suggestions, etc. would be so greatly appreciated.