I thought that this was a really interesting twist on the meaning and outcomes of Lady Catherine's visit. In canon, it serves to reassure Darcy of Elizabeth's feelings toward him; but here, in addition to making Darcy start to re-evaluate his own prejudices against Elizabeth's family, it also makes Elizabeth doubt the strength of Darcy's feelings, at least initially. And this is important because she has to think about whether his love is important to her, whether it's valuable, whether it's fleeting, and whether she can trust that it won't go away. Actually Lady Catherine is right that if it's just a passing fancy, her life could be miserable, and that's something that Aunt Gardiner brought up earlier in the story. So I think this could be a turning point for Elizabeth--does she need to think about how to please him so that he won't give her up, or can she continue to treat him cavalierly? Does she need to learn to please a man worthy of being pleased?
