I always found it intriguing that Elizabeth could turn down Darcy the first time he asked her to dance at the Lucas' but was too flustered to turn him down the second time he asked her to dance at Netherfield. But that is not the only reason why I believe Elizabeth was more interested in him than she let on... Why was she so intent on sketching his character at the dance? She really wanted to know him.. One could argue that Elizabeth had a curious nature, but she was content not to sketch Mr. Collins' character.... or perhaps Miss Bingley or Mr. Hurst's character. She "knew" from Wickham that Darcy was a horrible man who had wronged Wickham. Why probe Darcy? He was unpleasant and arrogant in her mind. Why even bother to talk to him? Just dance with him and get it over with...

As for Lizzy seeing herself not at the same level as Darcy, the narrator says as much in chapter 10 and again in 18 during Darcy and Elizabeth's dance.

And I think that Lizzy's pride and arrogance are apparent througout the book. Her treatment of Mr. Collins (he is silly and stupid) and her disdain for Miss Bingley and Mrs. Hurst, not to mention Mr. Darcy for thinking they were above everyone else. She knows she is smart and witty and she takes delight in everything ridiculous...

Having said that, I don't think there is anything wrong or improper in the way Elizabeth behaves. I just think she is young and I don't see a problem with pride...

By the way, I like the idea of Pemberley being a stand in for Darcy's family...