“But I would really advise you to make your purchase in that neighbourhood, and take Pemberley for a kind of model. There is not a finer county in England than Derbyshire." (Chapter 8)

I thought Lizzy was amused at Caroline’s love-fest of compliments to Darcy. Who could not be? Caroline enters on the subject of libraries so she can ingratiate herself with him. First by complementing the library at Pemberley, then by complimenting Darcy for adding to the Pemberley library which leads to complimenting Pemberley, Darcy’s estate, by instructing her brother to build a house in the style of Pemberley and finally by complimenting the county of Derbyshire where Pemberley is located. Just after Bingley says, "Upon my word, Caroline, I should think it more possible to get Pemberley by purchase than by imitation." Lizzy was caught by what passed, I think specifically the manner of conservation. Lizzy is probably agog at Caroline’s so obvious attention to Darcy and his lack of acknowledgement of that attention. I mean by the end of such a display many gentlemen might have been preening like a peacock but not Darcy. Lizzy is probably interested in where Caroline’s sycophantic wit will flow next. After all she is delighted by any thing ridiculous and Caroline is being ridiculous. I think she probably stations herself between Bingley and Caroline because she feels that the conservation between them might continue; as someone else mentioned at one point Bingley is the only person who shows her proper attention and she may wish to be near him for that reason also. ;D