Sin City 2 - Is Alexis Bledel aka Becky back in a Prequel?

MTV spoke with Alexis Bledel, in the first SIN CITY Becky the prostitute with the blue eyes embodied, on the long-awaited continuation. It should come out that they supposedly have an almost ready-made script to be read. According to this scenario is her character back. Some are wondering perhaps, how such a thing is possible. The speech is a Prequel, a history. How often did we start from