- Although one of the fields is damaged in the storm and has to be replanted, the roof holds up, thanks to the good work Jacob and Sarah have done on it.
- Jacob then teaches Sarah how to drive the wagon, which gives Caleb a ton of anxiety about her wanting to leave them. In fact, he starts crying when he realizes that she's learning quickly.
- The next morning, Sarah is ready. She gets dressed and leaves in the wagon bright and early. They all see her off, and Jacob tells her to be back before dark—since it can be dangerous to ride at night.
- After she leaves, Caleb spirals into anxiety, convinced that Sarah has gone to buy a train ticket back to her beloved Maine. He also blames himself, thinking she'll leave because he's loud and pesky. Anna tries to assure him that Sarah would tell them if she intended to leave.
- When they ask their father where Sarah has gone, he says that he doesn't know—and that they have to accept that Sarah does things her own way. She's independent like that.
- Anna tells Caleb that Sarah has to come back because she left Seal here. Then, when Anna sets the table for dinner, she puts out four place settings. We like your optimism, Anna.
- When the dogs start barking, they all run outside to see Sarah driving down the road in her yellow bonnet. Yay. Caleb bursts into tears and hugs her, blubbering about how he thought she left because she missed the sea.
- Sarah smiles and tells them that she'd miss them more, then shows them what she got in town: three colored pencils in blue, gray, and green. She's brought home the colors of the sea.
- Sarah decides to stay with them, and the book ends with an excerpt from Anna's journal in which she describes the content, loving life that they've built with Sarah.
- There will be a wedding soon, and Sarah's drawings of the sea hanging on the wall. Most importantly, though, there will be Sarah… an integral part of their little family.