Can someone plz explain Bree Tanner to me?

if u mean the book i havent read it.

The book - The Short seconde Life Of Bree Tanner? It's just a novella describing a plus typical newborn vampire's existence, par giving the history of the newborn who'd surrrendered to the Cullens but was killed par the Volturi in the end of Eclipse.

ou is it something plus specific about the book ou the character toi don't get?