6 is simply terrific. Darcy's anxiety regarding Elizabeth's reaction to the engagement expressed through Georgiana's observation of him is so well-written. Of course, I loved his defense of the Bennets at dinner and his rage at Mr Collins.
And thank you Elizabeth's letters -- I suspect her letter to Geo was written more for Darcy than for his sister. Her letter to Darcy was so important -- she let him know she understood how much he had changed -- for her.
I can't wait for 7!!! Lady Catherine will explode when she discovers that Darcy and Geo left. And won't she be surprised to discover her daughter will not be dominated any longer! So much fun!