How do the logistics between characters change after their rescue in the play, The Admirable Crichton?

Following their rescue, all return to their old social positions. Lord Loam is once again the master, Ernest the selfcentered playboy, and Crichton the butler. Lady Mary remains betrothed to Lord Brocklehurst, and no one speaks of the reversal of roles that happened on the island. When Crichton announces his resignation, everyone is "immensely relieved." He cannot be the equal of Lady Mary in London society. And since Lady Mary chooses not to leave London, Crichton resigns. He is disappointed in her, but he bears his disappointment with the dignity born of his understanding of the way of the world.