Donating a kidney.. if you have no idea what youre talking about please dont answer..?

They don't only look at the blood type, there are other things they look at to see if there is a match. I've heard that a sibling is more often a closer match than a child because the siblings both have genes from both their parents, but you (her child) only have her genes. Does she have a willing brother or sister? The best thing to do if you want to try to donate is to talk to her doctor and see if there are any problems with it.