I think that Jane and Elizabeth will gain notoriety for their advantageous marriages
I imagine that Jane and Elizabeth gain notoriety for their beauty and their advantageous marriages in society after the conclusion of the novel. Even though Jane's marriage is not as unlikely as Lizzy's, she will also gain that reputation by association (because of their mother's loW cOnNecTIonS).
I can see them being regarded kind of like the Middleton sisters, Kate and Pippa, and all the public's fascination with them for many years. They have been called "the wisteria sisters".
Perhaps fictional versions of Jane and Lizzy would appear in theatrical plays, works of art, poetry, novels, and the like, all adding to their allure and fame.
I can see them being gossiped about and disliked by many ladies of their new social class, although being British, of course they won't show it to their face without a veneer of politeness. But they will have plenty of sycophants and people wanting to be their friends due to their notoriety and wealth.
Edit: Almost everyone who commented missed my point with this post. It’s not that their stories were truly shocking or scandalous, I was just saying that they would be gossip fodder and definitely attract some jealousy and also some admiration. Libel laws were really weak at the time so papers could print whatever they wanted. There was every chance that the gossip and newspaper machines could turn them into characters of notoriety.