Homeopathy doesn't work, I don't say this as an opinion nor anything. Homeopathy method and arguments go against natural laws, specifically, physics & chemistry.
If you keep on dilluting a substance then there's a point in time in which there will be nothing left from the original medicine, I'm saying this because it has been
repeatedly proven. If you don't have any of the original substance, then what's the reason to use homeopathy? just drink water or something, that would do the same effect.
What is actually happening is called a placebo effect, which is a psychological reaction from our brains, you could say that it is an illusion and nothing else.
I don't care about what people think on these things because this is just pseudo-science and it's so common to see people getting scammed in low to mid income countries by this. Don't fall for it and get actual medical help for your relative, I'm sure that'll make an actual difference.
If you want to read about avogadro's limit and the actual science facts against homeopathy, you can search on the Internet. Here are a two links to read from (I found these after a short google search):