Dream About Family Reunion And Ex

I was at my dads house although in the dream it was different. Like he had moved into a different house. My nephew Jeremy was there and so was his little sister and my niece Kennedy. They were you her in the dream than in real life by at least two or three years. My nephew was very curious about everything and kept asking a bunch of questions and my niece just wanted to hide. She mostly hid under the giant bed in the back bedroom as it was easily tall enough for her to sit straight up under. My dad was there and he was making coffee or hot chocolate at some point in the kitchen because he came into the living room/bedroom with a mug in his hand and a smile on his face. My dads ex was also there which shocked me. She was a horrible person and my dad has told me so many times he would never go back to that woman. And it seemed like they were together which also shocked me. She was sitting on the bed in baggy clothes probably for pajamas and her hair was in a loose messy ponytail. She was on the computer and she had said about three words but I have no idea what they were. And that was the whole setting of the dream. The new house threw me off, my nephew and niece being there was odd because I haven’t seen them in five years and their two other siblings weren’t there. Jeremy is the oldest of the four and kennedy is the second youngest. And the ex being there was the biggest shocker. I couldn’t get over the fact that she was there when I was dreaming.