[She stops walking and turns to look at him.]

I won't run out. Every other bender has ready access to their elements - firebenders make their fire, airbenders are surrounded by air, and you rarely fight far from the earth. But waterbenders... I just have what I can carry, or what I can find.

[It's one of the reasons why their style is so adaptable - they have to rely on turning the opponent's force against them since their own force could end up being substantially less, not by power or skill, but by necessity.]