First of all, Jim is the narrator, so we are privy to his innermost thoughts. The story of Antonia is only told through Jim's narrative, and Jim's perspective, so we truly don't know what she learns, just what Jim thinks she may have learned.
Also, from the beginning, Jim is a brooding, alienated, cerbral character. He learns a lot about who he is and who he is not from observing the way Antonia lives, the way she interacts with her family and others not always to her betterman, and by weighing his own philosophies and way of life against hers, he learns more about himself. We don't have any evidence in the novel that Antonia does this in return. In fact, she mostly rejects the way Jim chooses to do things and when he gives her advice about
Also, from the beginning, Jim is a brooding, alienated, cerbral character. He learns a lot about who he is and who he is not from observing the way Antonia lives, the way she interacts with her family and others not always to her betterman, and by weighing his own philosophies and way of life against hers, he learns more about himself. We don't have any evidence in the novel that Antonia does this in return. In fact, she mostly rejects the way Jim chooses to do things and when he gives her advice about