As much as I wish there were, there isn't any "cure" for an AN except for surgery or radiation. Acupunture and/or holistic methods won't reduce it or eliminate it.
From what you are telling us about your friend's AN it is still considered large, despite surgeries. The recommendation of another surgery followed by radiation (also known as debulking) is commonly the best solution.
I can understand your friend not wanting another surgery, but it may be the only solution. If she doesn't treat her AN it has the potential to become life-threatening.
As for Dr. Shaninian and his endoscopic surgery, suggested by Tom, it might not be a possibility with a tumor of this size. Plus, lots of AN docs will tell you that endoscopic AN surgery limits the ability to see possible brain bleeds which isn't something you want to mess with.
Jan