I think an additional point about her perceptions of Georgiana was that Lizzy recognized Georgiana's manner as shyness rather than pride within a very short time of meeting her, and in spite of having been told that Georgiana suffered from the same improper pride as her brother.

I guess we don't know about Bingley and Georgiana or Jane yet, but in Chapter 45, which is within this week's reading, we have evidence that Lizzy was right about Georgiana.