Thirteen years later and still (probably) an idiot

I am fretting over the news that Helen Fielding is planning a third Bridget Jones book. Fielding says Bridget has "grown up" in this installment, but I expect she'll still be a grade-A doofus, and I was hoping the happily-ever-after she earned in book two would have included a longer humiliation-free stretch. However, I am curious to know if Fielding will manage to work in another Jane Austen parallel. The first Bridget book was a loose adaptation of Pride and Prejudice, and the second was a surprisingly faithful take on Persuasion, but there are only so many Jane Austen books left. Maybe Northanger Abbey? The bit where the heroine makes a total ass of herself would fit in beautifully with the rest of Bridget's adventures.