I had never really considered the jealousy angle before the group read, but I have to say that dissimilarity of opinions and pleasures does not usually produce malice. It could certainly lead Elizabeth to ignore or neglect her sister, but Anne's being pensive and less attentive to rank is not likely to produce the deeply personal malicious comments we have read.

Sir Walter also does not share Anne's interests and presumably also regrets the lack of importance Anne attaches to rank-- he ignores her, but he isn't malicious. Jealousy is a reasonable explanation for Elizabeth's behavior.