The writing is good, the adventures await you. We learn many things, how the lives of Bennet sisters unfolds. Their characters are similar to those given by Jane Austen, but the author here is innovative. Sometimes shocking ... I let you discover the book to know what I mean.
The first pages were difficult for me regarding the same story but it quickly takes a very rotated frame.
While the story focuses on Mary, do not worry, we talk about everyone! Including Mr Collins, of course!
So do not hesitate. It's always a pleasure to see the characters made by Austen.