Opinion.
I think, in this part Julia showed herself as a crazy and excessively romantic person. She imagined that Michael was an ideal man, and she understood her mistake only after some years. It is quiet obvious that nobody is perfect, but Julia was sure in opposite for some period of time. She created an idol and suffered from it.
Michael again showed himself as a typical “out-of-date” gentleman. He didn’t even notice, that Julia fell out of love with him, and that shows that was living in his own world, made of stupid and ”ancient” gentlemen’s traditions and his business. And in the end of the part both of them were satisfied with each other. They acted with each other like friends, not like conjoints, and thought, that it was normal. That is rather strange for me. Also I am glad, that the author at last finished with the past of Julia and Michael, and next time I’ll read about these two in present time (the time, when the book was written).