So the king and queen from frozen we're going to the movie Tangleds wedding. Then they got the shipwreck. The movie tangle was three years ago and when they opened the gates at frozen. And Rapunzel's mom and Elsa/Ana's mom were cousins!
And not just any life.but Olaf, which was the snowman she created with/for Anna the night of the first accident. She created something that was a very special bond between herself and her sister, and Olaf helped to bring them back together.