Okay, I'll add my second impression here on 7&8 (see my comment on thread below) and hope that Suzanne, Lise and others comment soon. I feel confirmed in my impressions of the characters being not terribly admirable, except Charlotte and Clara -- Clara, watch out for Sir Edward, keep away!!
Diana Parker isn't quite as much of an invalid as she claims, if she could walk as swiftly as she did, catching up with Charlotte on the way to Trafalgar House! Don't know yet about Arthur and the other Parker sister (whose name escapes me at the moment). Will Sidney make an appearance before chapter 11 ends? I want to see him!
I thought the "short chain of connection" between Diana and the West Indies family was pretty funny -- had a few missing links after all, didn't it?!