Better way to put this.
After the escape from the prison you'll wake up in the rebel stronghold (beginning of book 2)
Chapter 3 starts here, go to find the Sheperd and her friend. Answer the questions as you see fit and choose 'reject' at the end instead of 'accept'.
They'll put you back in the cell and you can answer the questions any way you like during the conversation. At the end of the conversation you'll get control back. Just put down the controller until the door shuts in your face. End of game.
When back at the main menu, choose continue and then leave the room.