In the book To Kill a Mockingbird how does Jem change in chapters 12-14?

He becomes more 'manly' and thinks he is more intelligent and superior than scout

you didnt put the link on, so i cant read the paraphrase

she is later raised by him and his wife, madame valmonde, who sees her as gift from god, as the couple cannot have their own children. later, desiree falls in love with a wealthy man, armand aubigny, and they get married.