When I read a book I expect to learn about the characters. The short second life of bree tanner didn't fulfill this expectation. Her new life is brief, so I thought the novella would show where she came from, her journey before been a vampire, at least briefly. Why she was on the streets? Who was Bree as a vampire? Certainly I don't know. The story had no details whatsoever that made me relate with Bree.
Good writing, but it needed more thought from the author. The dialogs between Bree and Diego are childish. Also, the author creates an attachment between Bree and Diego without reason.
I liked the cover design and the book format.