What happened in chapter 11 to kill a mockingbird

By the time Scout is in the second grade, tormenting Boo Radley is a thing of the past and Scout and Jem’s games take them further up the street and past Mrs. Dubose’s house. Mrs. Dubose lives alone with a black servant named Jessie and is rumored to carry a concealed pistol. Scout and Jem hate her, as she’s mean and responds viciously to even polite greetings. As time goes on, Jem gets bolder and insists that he and Scout need to run all the way to the post office—past Mrs. Dubose’s house—to meet Atticus in the evenings. But most nights, Atticus finds Jem enraged by something Mrs. Dubose said. He encourages Jem to understand that Mrs. Dubose is ill and greets her heartily every evening.