Hi everyone, I too am newly diagnosed

So how do you handle strange comments made by family members? My sister has told me to take large amounts of Vitamin C, that she knows people who have been cured, without medical treatment. Then she says she wants to come and hold my hand when I have radiation. Knowing her, she will want me to give her money. Its not helping, and Im nervous about the radiation starting Thursday. I had found a thread where people talked about 'cures' and now I cant find it, can anyone guide me to it - from a long time ago? Thank you.