[To him, it's obvious. She's his older sister because she bosses him around.]

I managed it when it was important, yes, Ms. Potts. [Not so much at other times, but he's still hoping that he helped reconcile Marguerite and Percy by letting her in on Percy's secret, even if it was against orders.]

That's a relief. We came a little too close to Madame Guillotine before we got away.

When I get to the city, I'll try not to use it so much. [But right now it's important to him as his contact with people.]