I have not counted the lines, of course, but I am under the impression that we have not come across such a long description of somebodys emotional state of mind in the book (yet).

It starts with "Elizabeth was now most heartily sorry that she had, from the distress of the moment, been led to make Mr. Darcy acquainted with their fears for her sister." and ends with the kind of marriage she imagines first for herself with Darcy and than for Wickhan and Lydia. This sure is a major climax in the novel for me.
As English is not my first language, I am struggeling a bit with: " The wish of procuring her regard, which she had assured herself of his feeling in Derbyshire, could not in rational expectation survive such a blow as this. She was humbled, she was grieved; she repented, though she hardly knew of what." I would very much wellcome your thoughts about it.