Oh, children! Well, probably just Sakura would be a small child now, but Wander couldn't resist spending time with kids.

"Wait, is Waver from a really rich family? I wouldn't have thought of a kid bein' a master of someone as strong as you, especially for a war."

Children shouldn't even be involved in wars (which shouldn't exist in the first place), so unless there was missing information, it couldn't make sense?

"You worked for his family, Grainne?"