Try checking the "Ask Humaworm" forum. Very good information on that one regardless of what product you choose to use.
Also - you might want to look into maitake and shitake mushroom formulas (for immune support - google them for info), astragalus (another great immune booster), and chlorella - which is a great blood purifier.
My daughter recently beat an aggressive form of cervical cancer and went to a hospital that supported alternative therapy as well. She used the immune boosting and blood cleansing nutritional support. It can't hurt, that's for sure.
Reiki seemed to help alot with her healing as well.
I wish you the best in your healing journey with your mother.