Ch.37 is so crammed with vivid incident and satisfying occurrences that it needs more than one post. I would love to see an adaptation which took the time to do justice to it.
Mrs Jennings' report of the uproar at Harley Street is a real gem. I don't generally like to cheer at the discomfiture of others, but the combination of three horrible women all being massively upset in one paragraph is irresistible. Fanny in hysterics (and later we hear that she is "in agony"), Lucy scolded into a fainting fit, the prospect of Mrs Ferrars having hysterics - I can't help but cheer, even though none of them are at all improved by being so severely thwarted.
There's an interesting little sidelight on John in this paragraph, when he goes down on his knees and begs Fanny not to throw Lucy and her sister out into the street without giving them time to pack their clothes. And what is Fanny's response? Why, she has hysterics again so violently that he is frightened into sending for Mr Donovan. If this is Fanny's response to being contradicted then it is not hard to see how she keeps him under her thumb. She has clearly whipped him into line again by the time he calls on his sisters and Mrs J the following day.
I think this incident during the uproar at Harley Street illuminates the narrator's comment in Ch.1 that had John married a more amiable woman he might even have been made amiable himself.