Lovely stuff! Always enjoy a good vore game!
Though I have a question.
I read through the survival tips in the pause menu and saw that you should escape with the book, so I did. I found the exit key right next to the book funnily enough, grabbed them both, got chased on the way out, got out of sight, reached the exit and left with the book in hand.
However, when I won the game nothing special happened. Did I miss something or what should've the book when you escaped?