Harriet agrees to Emma’s plan to send her to London on the pretense that she needs to see a dentist, which satisfies Emma since she does not want to hurt Harriet with news of Emma and Mr. Knightley’s engagement. Emma decides not to tell her father of her engagement until Mrs. Weston, who is pregnant, has given birth to her baby. Meanwhile, she pays a visit to Jane. They are unable to speak openly because Mrs. Elton is there, and Jane’s engagement is still supposed to be a secret. However, Emma interprets some of Mrs. Elton’s remarks and expressions as ostentatious indications that Mrs. Elton is in on the secret of Jane and Frank’s engagement.

Mr. Elton turns up, annoyed that Mr. Knightley has missed a meeting with him. Emma decides he must be waiting for her at Hartfield and leaves. When Jane walks her out, they are reconciled, each feeling that she owes the other an apology, both full of goodwill.

Mrs. Weston safely delivers a baby girl, much to Emma’s delight. Mr. Knightley reminisces about how headstrong Emma was when she was a child. She expresses gratitude that he so often corrected her mistakes, and he asserts that she would have done just as well without him. Emma is grieved that she cannot speak more openly with him about Harriet. Mr. John Knightley congratulates Mr. Knightley and Emma on their engagement, and shocks the couple by saying that he is not surprised by their news.

Emma works up the courage to give her father the news. Mr. Woodhouse is shocked, but he gradually begins to resign himself to it. Mrs. Weston helps persuade him that his happiness will be increased rather than diminished. She is surprised and overwhelmingly pleased by the match. Mr. Weston shares the news with Jane and Miss Bates, and soon Emma and Knightley’s engagement is the talk of Highbury. Only the Eltons are displeased that Emma has made such a good match.

Mr. Knightley has news for Emma: Harriet is to marry Robert Martin. Knightley had sent Mr. Martin to London with a package for his brother while Harriet was there, and Mr. Martin began to spend time with the family. Knightley worries that Emma is upset, but in fact she is thrilled, amazed, and amused at Harriet’s rapid recovery. Emma is thankful that she has not done Harriet greater injury, and she is glad that soon she will no longer need to conceal Harriet’s emotional state from Knightley.

Emma and Mr. Knightley go to visit Randalls and find Frank and Jane there. At first, Emma’s meeting with Frank is awkward, but soon they are back on easy terms, joking about all that has passed. Frank’s ability to speak lightly of all he and Jane have suffered is not entirely approved by his fiancée, and Emma feels Knightley’s superiority to Frank.

Harriet returns from London, and Emma is glad to see how completely she has recovered from her infatuation with Knightley. It is revealed that Harriet’s father is a tradesman, a respectable person, but not the aristocrat that Emma had predicted. Emma receives Mr. Martin at Hartfield, but realizes that her friendship with Harriet must “change into a calmer sort of good-will” because of their different social positions.

Harriet and Mr. Martin are the first of the newly engaged couples to marry (in September); Frank and Jane will be the last (in November). Jane is visiting the Campbells, and she and Frank will live at Enscombe. Emma would like to be married in October, but it seems Mr. Woodhouse will never agree. But when Mrs. Weston’s poultry-house is robbed, Mr. Woodhouse is eager to have Mr. Knightley in the household for protection. The wedding is too modest to please Mrs. Elton, but “the wishes, the hopes, the confidence, the predictions of the small band of true friends who witnessed the ceremony, were fully answered in the perfect happiness of the union.”

Although Emma ends in the traditional manner of a comedy, with a series of weddings to secure everyone’s happiness and reaffirm social ties, the question of whether or not the novel’s ending is truly happy is often posed. Some critics suggest that Emma regresses, rather than develops, at the end of the novel because she exchanges her independence, energy, and wit for a wish “to grow more worthy of him, whose intentions and judgments had been ever so superior to her own . . . that the lessons of her past folly might teach her humility and circumspection in future.” Instead of marrying a man who is her equal, Emma marries a father figure, and, not only will she not be traveling beyond Highbury, she will not even leave her own father’s home. Emma’s and Mr. Knightley’s reminiscences about her childhood remind us that his main role in her life has been as an authority figure and underline the fact that a large portion of her love for him is as someone who can be depended upon to guide her. She is so used to calling him “Mr. Knightley” that she says she will only call him “George” on their wedding day. Emma’s position at the end of the novel is strikingly similar to the position she was in at the beginning.

Also, Emma’s thoughts about Harriet indicate that Emma has grown more selfish. She takes for granted that their differing social positions mean that they must give up their intimacy. She does not seem to regret her decision or miss Harriet, suggesting that the need to adhere to social conventions overwhelms the affection that she has for Harriet. Emma’s thoughts following the revelation of Harriet’s parentage demonstrate that class distinctions have value for Emma apart from their association with personal virtue:

In other words, a match between a gentleman and the illegitimate daughter of a tradesperson would be a true contamination. Although at some points the novel seems to entertain the idea that class distinctions might be unfair or unfortunate, ultimately the novel is decidedly conservative. Austen demonstrates that the happiness of a marriage depends upon the couple’s being appropriately matched, rather than one of the parties trying to rise above his or her class background.