Irene lifts a hand, but it puts it back down. "Scarlet... good night Scarlet."
*****
I can assure you embarrassing Butler is incredibly difficult.
You could just... you know. Explain that it's not a pet but a person's name. Alas, these Shinigami think they own the place.
Butler does however go into a rather rare frenzy. He despises the drones already. How dare they try to take away his job? The servant drone gets bashed, trashed, and mutilated by angry Butler. Who then proceeds to clean up.
I'm pretty sure destruction of private property is a jailable offense mister! Of course he belongs in there. Of course... Butler does too now. But he's more than happy to pay for his crime with jail time so long as there is one less drone in the world stealing his spotlight.
They both deadtime.