My father died last year after a long illness, and my mother immediately moved on to a new beau. It was hard to see, but my sister and I acknowledge that our mother did much of her grieving before our father died. My sister is hosting Thanksgiving this year. Her in-laws are staying over, so my mother and her new boyfriend are staying with me. My guest room has twin beds. This is “unacceptable” for adults—my mother is demanding she get my room. The thought of my mother having sex with her boyfriend in my bed makes me want to vomit. I don’t want to be the one responsible for ruining the holiday here. I am the only one still grieving for my dad. Sometimes I stop and cry because something reminds me of him. My sister is focused on her family, while my mother has been constantly traveling with her new boyfriend. I don’t want to be the drag, but I can’t deal with this. Why is my guest room not acceptable? Can you help me?