personally i think he is going to end up having another stray in the house.
He's not going to do it. He's just taking a page from Sebastian. I doubt he'd want her to meet the queen as a frighten child so he gave her a choice.
It makes sense though. She is capable of creating this incredibly deadly gas. Would you leave someone like that in a country that while not an enemy certainly isn't a friend? She's basically a weapon in and of herself! There's a reason why everyone is so jumpy about countries having nukes... So basically Ciel is simply saying: Either become OUR nuke, or I'm disarming you. Which while cold and heartless is logical
@Make sense: I love they way you compared that. I started laughing when you mentioned nukes. The old lady proclaimed that mustard gas was the deadliest weapon, I wonder how'd she'd feel if she knew about us dropping the atomic bomb.
Wow poor green witch. I hope Ciel doesn't actually do it.