How can you say we will not be harboring a dictator when there is a dictator in our house at this very moment, touching our furniture and... and talking!? He is right here! [he points dramatically at Ribbons with a stubby claw]
And as for changing him for the better—it is quite impossible. PM, his kind never changes. You said yourself that even friendships and his dance class and his promises could not keep him from betraying you all the moment he saw his chance to escape and return to his old ways!
I am only one Mayor. If friends and a new life could not change him, I most certainly cannot. Did you think I could make tea for him and give him human biscuits and have an evening talk and fix him without fuss, then? Is that all you thought it might take?