My sister sadly took her own life and the funeral is next week. Her son's wishes are that we as a family (mum, dad, sister, son) travel in the car and sit together at the funeral. My mum and dad are separated. My Dad wants his partner on the front row with us, the same woman he had an affair with while my parents were married. Is it unreasonable to ask that she doesn't sit with us? We all get along, that isn't the issue. It just feels like this should be a time where family wishes come first. AIBU?