These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Also, Rose firmly refusing Charlie's apologies when he screws up a little too much.
Phebe nursing Uncle Alec back to health, pretty much bringing him back from the doors of death and finally earning the approval of the aunts.
Fair for Its Day: Alec bans corsets and patent medicines, encourages Rose to get fresh air and exercise, teaches her human biology and shows her how to manage her own accounts. Phebe grows up to earn her own living as a choir singer (even though she does give it up to marry Archie, though to be fair she freely chooses to do so and there's the fact that she finally can start building a family of her own, what with having been an orphan) and is treated as an equal by Rose, Alec and the boys (if not the aunts). By 19th-century standards, that's quite modern.
Not to mention, when Kitty looks up at Rose as a Cool Big Sis, Rose notices and tells her to study and improve her learnings. And Kitty does so.