Dream About House Fire Grandma

I had a dream that me and my grandma Jeanne were at my house (only it wasn’t really my house in real life) and this older couple showed up with their kids (kinda reminded me of the that old lady off of osarks tv show) they threw a bottle into the house and it caught on fire. She told us she wanted her old bedroom back(it was the master bedroom) And I think we talked for a bit and kinda calmed her down. Grandma Jeanne started cleaning the room for her and I went and used the fire extinguisher on the kitchen table in the main part of the house and was trying to text Joey on my watch so they didn’t notice. And told him to call the police right now and that someone was trying to burn our house down. Then I went in to help Grandma Jeanne clean also and it was raining and wet and slick. We were trying to disract them and keep them calm to believe we were going to give them that one room. In the dream it was portrayed like they used to own it and then idk if it got taken away from them or what but they for sure wanted it back. She was talking to me in a nice calm way after we’d been cleaning and said you could rent out that big room and make some money and isn’t that a beautiful view. I don’t remember how the dream ended.