Following Mr. Bennet’s death, Mary and Mrs. Bennet move north to live with Jane and Mr. Bingley. Mrs. Bennet settles in contentedly, but Mary feels uncomfortable. She finds Jane’s kindness to be polite but distant, making Mary feel like a dependent. Her stay is made unbearable by the presence of Caroline Bingley, who is still bitter about losing Mr. Darcy to Elizabeth. Caroline takes out her frustration on Mary, subjecting her to a relentless campaign of subtle insults about her clothes, her studiousness, and her lack of social graces.

One evening, Mary, alone, sits down at the piano she was playing when her father humiliatingly ended her performance at the Netherfield ball. As she finishes playing a passionate piece, Caroline appears and urges Mary to continue playing, adding, “Or perhaps you fear you have delighted us enough already?” (159). Mary resolves to no longer endure being Caroline’s victim. She writes to Elizabeth asking for refuge at Pemberley.

Mary arrives at Pemberley and is greeted warmly by Elizabeth. The sisters fall into a comfortable routine, and Mary begins to feel her anxieties ease, daring to hope she might find a permanent home there. Her peace is disrupted by the return of Mr. Darcy and his sister, Georgiana Darcy. Mary quickly senses that while Darcy is polite, he is uncomfortable with her presence, viewing her as an intrusion on his family’s privacy.

Elizabeth’s attention naturally shifts to her husband and Georgiana, a timid girl who adores her new sister-in-law. Mary watches as Elizabeth bestows on Georgiana the affection and encouragement Mary herself has always craved. Georgiana is a talented pianist, and Mary feels she cannot compare. The painful realization of her outsider status crystallizes when she observes the Darcys, Georgiana, and their son, Fitzwilliam, as a perfect, self-contained family unit around the piano. Understanding there is no place for her, Mary tells Elizabeth she must leave. Elizabeth does not press hard for reasons but is surprised at Mary’s choice of destination. Mary announces her intention to visit Mr. and Mrs. Collins at Longbourn, explaining that she needs to be somewhere familiar. She hopes for practical advice from her old friend Charlotte.

Upon arriving at a much-improved Longbourn, Mary is greeted by Charlotte, who now carries herself with an air of prosperous self-possession. Charlotte then gives Mary a tour of the transformed house, proudly pointing out all the refurbishments. The changes are so extensive that Mary feels more like a stranger than a former resident.

Charlotte introduces Mary to her toddler son, William Collins, whom she dotes on. Later, in her old bedroom, Mary is happy to find Mrs. Hill, the Bennet family’s former housekeeper, who has stayed on with the Collinses. Mrs. Hill expresses concern and curiosity about Mary’s plain wardrobe and precarious situation, gently suggesting she should have nicer things.

At dinner, a flustered Mr. Collins arrives late from a meeting with the bishop. Throughout the meal, Charlotte expertly manages her husband, anticipating his needs and guiding the conversation. When Mr. Collins praises her as an excellent manager, she avoids his affectionate gaze and does not respond to his touch. Mary observes a distinct coolness in Charlotte’s otherwise dutiful behavior. After the women withdraw, Mary is left with a troubling image of Mr. Collins sitting alone at the head of his table.

Later that night, Mary reflects on her first day back at Longbourn. She concludes that Charlotte has achieved the security and status she desired through her marriage and her improvements to the house. By all practical measures, her choice seems to have been a success. However, Mary cannot shake the impression of Charlotte’s emotional distance from her husband and his resulting solitude. She resolves to use rational observation to understand their dynamic.

Mary settles into a quiet routine at Longbourn, playing the piano and helping Charlotte in the garden. She soon notices that Mr. and Mrs. Collins spend very little time together. Mr. Collins is frequently occupied building a garden arbor—a project Charlotte suggested. One day, Mary sees him digging with furious energy before slumping against a wall in despair. She realizes he is deeply unhappy.

Observing them more closely, Mary sees Mr. Collins repeatedly try to engage with his wife, only for Charlotte to politely evade him. This dynamic prompts Mary to undertake a scholarly investigation into the nature of happiness. She enters her late father’s library for the first time since his death, finds the philosophical books she needs, and begins her study.

Mary’s solitary study in the library is soon interrupted when Mr. Collins begins to use the room for his own work. They agree to share the space in silence.

Mary asks Mrs. Hill if she thinks the Collinses are a good match. Mrs. Hill is noncommittal, stating only that they do not argue. Mary, however, contrasts them with the affectionate Darcys and realizes the truth: Charlotte deliberately engineers her life to avoid her husband’s company. She has made herself emotionally inaccessible, and Mr. Collins’s unhappiness stems from his awareness of this fact.

After several days of sharing the library in silence, Mr. Collins’s curiosity gets the better of him, and he asks Mary about her studies. He examines her books—works by Locke, Paley, Rousseau, and Hume—and is taken aback by their scholarly nature, admitting he assumed she was secretly reading novels. When he asks if her inquiry has a personal application, Mary asserts that the search for happiness concerns everyone. Mr. Collins grows thoughtful and leaves her to her work.

A few days later, Mr. Collins gives Mary a copy of Aristotle’s Ethics, suggesting it is relevant to her study and proposing they discuss it together. Mary is deeply grateful for his interest in her intellectual pursuits. They begin a series of animated discussions, and Mary’s confidence grows as she articulates her ideas.

Their new partnership does not go unnoticed. Charlotte remarks on the time Mary is spending in the library and warns that Mr. Collins can be “fatiguing.” When Mary innocently suggests Charlotte join their studies, Charlotte’s tone becomes sharp, and she abruptly leaves. Later, at dinner, Mary senses a new, subtle watchfulness in Charlotte’s manner, though she tries to convince herself she is mistaken.

Mr. Collins, enthusiastic about Mary’s progress, proposes to teach her Greek and gives her his old grammar book. Mary is thrilled and diligently begins her lessons. One afternoon, Mr. Collins proudly has Mary recite the Greek alphabet for Charlotte. Mary stumbles through the recitation, unsettled by Charlotte’s “appraising stare.”

After Mr. Collins praises Mary, Charlotte offers a chilly and pointed compliment, making her displeasure clear. Later, after Mr. Collins leaves on business, Charlotte claims to feel tired and retires early, leaving Mary alone. Mary realizes Charlotte resents the time she spends with Mr. Collins but dismisses the idea that she is jealous.

The housekeeper, Mrs. Hill, warns Mary about her library sessions with Mr. Collins. While she knows Mary has no designs on him, she points out that Mr. Collins now spends more time with Mary than with his wife. Mary is mortified, realizing she has been foolish. She resolves to end the lessons immediately.

Mary tells Mr. Collins they can no longer study together, explaining that the situation is inappropriate. He does not argue but confesses his deep loneliness and how much he has enjoyed her company. He then admits his regret over his hasty marriage proposal years ago, stating that if he had been wiser, he would have chosen Mary. Mary is consumed with fury, recalling how he had failed to see that she was the only one who might have suited him, but she masters herself. She advises him to seek companionship with Charlotte and then flees the room. Unseen by either of them, Charlotte has been watching them talking from the garden.

In the following days, Mary and Mr. Collins avoid each other. A newly cheerful Charlotte takes charge of conversations, filling awkward silences and showing her husband an uncharacteristic warmth and affection, which he receives with grateful surprise. She informs Mary that she and Mr. Collins will now be working together on the garden arbor and pointedly tells Mary she will have the library to herself. Mary returns to the library but finds no pleasure in studying alone. The room feels empty, and she feels lonely as she watches the Collinses working together outside.

Mr. Collins announces that his patroness, Lady Catherine de Bourgh, will be visiting. Because he will be away at a meeting, Charlotte and Mary must receive her alone. The imperious Lady Catherine arrives and, after critiquing the house, turns her interrogation on Mary. She questions Mary’s family situation and identifies her bleak marriage prospects.

Charlotte intervenes, ostensibly praising Mary’s accomplishments—her piano playing, her scholarship, her study of Greek. Lady Catherine dismisses Greek as unsuitable for a lady, then insists Mary is perfectly suited for the role of a governess. She announces her intention to find her a position immediately. Lady Catherine ignores Mary’s horrified protests, viewing the matter as a charitable project.

After Lady Catherine departs, Mary angrily confronts Charlotte for encouraging the idea of her becoming a governess. Charlotte calmly admits that while she did not intend it, she sees the advantages of the plan. She tells Mary bluntly that her presence at Longbourn has become a disruption. She confesses that Mary’s visit has inadvertently shown her how to be a kinder wife to Mr. Collins, which will benefit them both, but says their chance of happiness is greater if Mary is gone. Having been, in her view, candid, Charlotte offers a final piece of advice: Mary must make a bold decision and start a new life elsewhere.

Realizing she must leave Longbourn, Mary feels trapped. She cannot return to the Bingleys, and Pemberley is not an option. She then remembers a kind letter from her aunt, Mrs. Gardiner, who had offered Mary a home with her family in London. Spurred by the threat of Lady Catherine finding her a governess position, Mary writes and asks to visit. The Gardiners reply with a warm and immediate welcome.

Charlotte receives the news with equanimity and offers to write to Lady Catherine explaining that family circumstances have called Mary away. On the day Mary leaves, the Collins family sees her off. As she settles into the carriage, Mr. Collins wordlessly hands her a small parcel. Miles down the road, Mary opens it to find the Greek dictionary. Tucked inside is a note with a Greek quote they had once discussed: “Happiness depends on ourselves” (215). Determined not to cry, Mary puts the book away and faces the road to London and her uncertain future.