I’ve been trying to think of what to say, but all I can come up with is that your portrayal of the amorality, selfishness, and manipulativeness of the Crawford siblings in these changed circumstances is consistent with the original. Kind when it suits them, generally with an ulterior motive. Using the good principles of others against them. Fanny’s situation of generally being overlooked allows her to see unguarded moments of others, many of whom think she is too stupid or ignorant to understand, or consider her too unimportant to care if she does.
I’m enjoying this very much.