This is a rough situation. Like honestly asking but what is grandma supposed to do? It sounds like OPs parent on her grandmas side either couldnt come or is no longer around. So grandma has to choose between having her daughter who did nothing wrong there, or a grandchild who did nothing wrong. It sounds like grandma chose to have her daughter at thanksgiving which meant they sadly had to bring the rapist. I’m honestly not sure what they can do with him. He’s what 15 too? I don’t think they can legally kick the child out so what are they supposed to do with him? By grandma not having OP over until after rapist leaves she might be doing her best to protect OP while not losing her child who again, did nothing wrong. The rapist is at fault, not the Aunt. This situation is tough and I really feel for you OP. I hope he goes to jail soon and I hope if you want therapy you’re able to access it.