Dream of deceased Family in grandmother's house

"I was in my grandmother's house, although it looked bigger than I remember. People were sitting in the living room, talking quietly, and I kept recognizing them one at a time. They were all people who had died. Nobody acted like anything was unusual. My uncle was complaining about the coffee, and my old neighbor was looking for the remote. I wanted to ask them how they were there, but it felt rude, like bringing it up would make them leave. My grandmother was sitting near the window. I tried to sit beside her, but every time I crossed the room, something got in the way. First someone asked me to move a chair, then I had to answer the phone, although the phone was unplugged. When I finally reached her, she handed me a grocery list. It had ordinary things written on it, like bread and soap, but at the bottom it said, “Don't forget to come back.” I asked her when she was coming home. She looked at me like I had asked the wrong question and said, “I'm already here.” Then the lights went out. When they came back on, the room was empty except for her chair. I woke up feeling like I had been visiting someone, not dreaming."