A book whose main character is from literature land.

I read this book a few years, the setting was literature land, where each major genre was a continent/country and people had to get jobs in certain books and when someone was reading the book it was their job to act out the book for the reader (this is what the reader would see in their imagination).

The main character was the book version of a real life woman who wrote about her journeys into literatureland. It may have been called bookland or storyland I cant quite remember.

This character ends up getting recruited to solve the mystery of why her real life counterpart has gone missing and why books are being blown up. She ends up going into the real world and meeting the real world versions husband and kid etc.

If anyone knows the title or author of this strange book that'd be awesome!