Jonathan Miller was your dad and Cairo was his student, she was the same age as you, she often was around the house to get study and get help from your dad

she was in a room of your house that was usually for guests and your dad was in the living room, you walked inside that room to get a blanket or something and as soon as you opened the door you saw Cairo on the bed smoking, you never saw her smoking and she was obviously hiding it

Cairo: “You saw nothing okay?!”