Angie Doesn't Have a Brother

Our conversation in the van this afternoon (totally out of the blue and not connected to any previous discussion).
D: Angie doesn't have a brother.
B: Yes she does. Do you know who it is?
D: No....?
B: Dada! Dada is Angie's brother.
D: (thinking) But she's not close to him.
B: Well, they were close together when they were little. They lived in the same house with Rita and Pa Windell in Camden.
D: Now Dada lives in North Carolina with us and Angie lives in Tennessee. She is all alone.
B: No, Angie is not alone. She lives near Rita and Pa Windell and she has her husband, Chris, who lives in the house with her. She's not alone. And she has her dogs, cat, and bird.
D: (thinking longer).....Well, that's just silly!