It's quite remarkable how postmodern Jane Austen's novels already are. See also Northanger Abbey, where she regularly breaks the 4th wall for a meta-discourse on literature and genres, just to involve the reader again and again, as if she had never ripped the veil – which isn't necessarily black, BTW.
(In this context, it may be also notable how Fanny Price’s apparently keen social observations are really a mirror of the rigorous views and forms conveyed in moral books as characterized by Austen and put up as a foil and antipode to the genre of novels in this meta-discourse, and laughed at in other novels, like in the characters of Mr. Collins and Mary Bennet in Pride and Prejudice. If not for other reasons, Fanny Price is an anti-heroine, just for her anti-novel-ness.)