[She doesn't miss his uncertainty. And it's hard to forget what he's told her about what it's like between those with 'abilities' and those 'without.' So where her questions would normally be interested, eager, they're coming out much more cautiously.]

In my world, only the Avatar can master all four elements. It's the Avatar's job to preserve balance.

[She hesitates.] So you've just got one that's different from us - aether? I've never heard of anything like that before.