My brother in law has been sick with Covid since Halloween. He was extremely fatigued along with some bad respiratory symptoms. As of last week, he was still sick. His daughter also was sick with Covid. He started to feel better over this past weekend and was retested for Covid yesterday and tested negative. His daughter also was negative on a re-test. My mother in law who is 77 and not in great health is going to his house in a couple days to spend Thanksgiving. My brother in law thinks that since he had a negative test there is no risk to her. I strongly disagreed, my husband relayed our concern to him and he took offense and said it was in fact safe and he doesn't appreciate being accused of putting their elderly mother at risk. I think my brother in law is being very selfish and ignorant. The real problem is that my mother in law expects to come to our house for Christmas 3 weeks after leaving my brother in law's house. I told my husband his mother can not come for Christmas. He agreed but I can tell he feels bad about it. I also feel bad about it as she is a lonely elderly woman, but I don't feel I should put my family at risk from a known Covid exposure. She is making the decision to go to my brother in law's house in spite of his recent and prolonged illness. And she has a right to do what she wants, but I have a right to control who comes in and out of my house and I don't want my family put at risk. Am I being unreasonable? Thank you for your help.