It's no flattery when I say I know individuals thrice your age that aren't so clever.

[His tone is flat, and with an undercurrent suggesting it's less praise, and more disparaging of those grown fools.]

[Twelve. That's hard for him to gauge. His childhood had already ended by then, already stained with rebellion and his first kill, as had Edelgard's, but they... were not the most normal examples.]

Twelve. I see. [Not really. But...] If you so insist, from here on out, I shall treat you as a grown lady—complete with all the expectations that entails.

[It's a warning. He will not baby you, kid.]