Thank you for the link.
This is the first time I see that the grandparents of Anna were on the trip and the family had 3 separate staterooms. Maybe it was mentioned before. idk
From the link -
The Kepners, their son, his three children, including Anna, his new wife, and her children from a previous marriage, took the trip together. It was to be a new tradition they were looking forward to keeping, Jeffrey Kepner said. The three generations had three staterooms on the ship.
“The two younger girls stayed with the parents and then the three teenagers, they decided amongst themselves they wanted to stay in the room together. But we had a larger room and we made it very clear that at any time if they weren't getting along, they didn't want to be together, we had an extra bed in our room that they could come to,” Barbara Kepner said.