[ There's another pause on Ciel's end, because honestly, he hadn't expected Zara to reject the offer. There was no real basis in his confidence, just Ciel's impressions that no one would turn down such an offer for him. There's no change in his tone, at least, but he is frowning with mild distaste on his end. ]

...Well, it's not exactly the same, admittedly. I have a butler of my own, though he's not here, so you wouldn't exactly be in the employ of my household.

[ There's another pause, a half grumble, then he admits: ] I've simply never had to attend to... certain things. I find myself in need of help, and I thought your skills and manners were better suited.

[ What he really means here is that Zara is better suited to do things for Ciel than for Ciel to take the effort to learn on his own, but. ]