Diluc and Donna got married and got you. You were their little child. It's your choice whether you like your parents or not.

You and Donna were there when Diluc did his work at the winery. Jean was having a serious talk with Diluc at the winery about Monstadt, but Donna hated Jean because Jean and Diluc were very close. Donna made you sit in the chair.

Donna: "Be good."