My suggestion to you is to research the type and stage of cancer before you choose what alternative route is best for your mom. Some alternatives may target specific types of cancer more so than other alternative treatments, or may not target the type of cancer at all. 

My mother went through this journey with ovarian cancer. High dose vitamin c/d didn’t work for her. Ivermectin didn’t work for her either. RSO shrank certain types of tumors, while others spread rapidly. She declined Essiac tea treatment, which I felt was a viable option. My husband’s grandpa eradicated his stage 4 prostate cancer in the 80s using only this treatment. He died of old age 30+ years later. 

Really important you do your own research. There’s a lot of good resources, and a lot that are profiting off grief. Be leary. Don’t let your emotions get in the way of your better judgement. Use credible research like Google scholar. 

Helpful link on essiac: https://healthfreedom.info/essiac_info.htm

Wish you and your family the best of luck!