My Plain Jane by Cynthia Hand

You may think you know the story. After a miserable childhood, penniless orphan Jane Eyre embarks on a new life as a governess at Thornfield Hall. There, she meets one dark, brooding Mr. Rochester. Despite their significant age gap (!) and his uneven temper (!!), they fall in love—and, Reader, she marries him. (!!!)

Or does she?

Prepare for an adventure of Gothic proportions, in which all is not as it seems, a certain gentleman is hiding more than skeletons in his closets, and one orphan Jane Eyre, aspiring author Charlotte Brontë, and supernatural investigator Alexander Blackwood are about to be drawn together on the most epic ghost hunt this side of Wuthering Heights.