ratbastid

See, you've got two things to consider here. Your mom's health is one. Your relationship with your mom is the other. You MIGHT improve the former by barging in there and telling her that her beliefs are wrong, but I guarantee you WILL damage the latter.

Here's my advice: subscribe to the scientific method. If something works--even if it doesn't seem to you like it should work--then it works. I don't see why homeopathy should work, in fact it seems entirely bogus to me. But if she sees results she's happy with, then it's not our place to argue with her results.

If she were diagnosed with cancer (way to play the scare tactic there, by the way, guys) and wanted to do a homeopathy-only response to it, I'd want to follow the same philosophy. Do an experiment. Try it for a brief time--long enough to let it show results if it's going to, but not long enough to endanger her recovery in any significant way. I'd work with her doctor to figure out how long that is. If at the end of that period it's producing sufficient results (as had been defined prior to the experiment), then great, carry on, and continue to monitor it very closely for ongoing results the same as you would with any course of treatment. And if not, then switch to something else--probably something more traditional--and see if that produces results.