In the end, what happens to David and Alan? From chapters 25-30

Alan would hide about the country, coming once daily to a singular spot where David or a messenger could find him. David would seek out a lawyer who was an Appin Stewart and who could thus find a ship for Alan's departure. They soon reached a spot looking over the city called Rest-and-be-Thankful.

Both feeling very saddened, they repeated the plan to each other. David then gave Alan the little money he had and they shook hands good-bye. David ran down the hill to Edinburgh, refusing to look back until Alan was out of sight. He was overwhelmed by sadness and loneliness. When David reached the city, the crowd carried him to the door of the lawyer he sought. The narrator then ends the story, alerting the reader that both David and Alan handled what was in store for them well enough.