"They must feel the need to hide." It's the only explanation. Rats are everywhere, London Above, London Below, even the Great and Terrible Isle of Westminster. Also, why would there be cats if they had nothing to hunt?

"But who do you pay fealty to?" The Bambi reference escapes her. She knows so little of the world above. Pulling her sleeve apart, it was ready to fall apart anyway, Door tries to brush some grit away. Keeping her wound clean came second to running away from the two assassins.

The bandages worry her. "I have nothing to trade for the bandages. I must owe you a favour."