Third Person Limited
Although Austenland focuses on Jane Hayes, the story isn't told from her perspective. We thinks this helps the story be less confusing. All of that flip-flopping back and forth and sideways between dating Martin, and dating Nobley, and dating nobody at all would make us feel awfully dizzy.
But the main reason Austenland is told from a third-person point of view is because that's how Austen told her stories. Don't believe us? We have proof: Pride and Prejudice, Sense and Sensibility, and Mansfield Park are all told from a third-person POV.
Hale does limit things to Jane's perspective, however. Mainly because the thoughts of the gentlemen are guarded in secrecy. A man can't be brooding and mysterious if the narrator can read his mind, right?