Katara is horrified to discover that she likes holding his hand. After she snatches him from midair, his grip lingers a moment.
Katara jerks away. She is furious. She will not be swayed by a warm, gentle hand.
But later, when she leaves a murderer breathing, when she can't stop shaking, it becomes her lifeline. Holding her hand, Zuko guides her back to Appa and helps her into the saddle.
She won't let go. Can't let go.
Zuko doesn't speak. Single-handed, he finds a blanket and drapes it over her dripping shoulders.
Katara can't imagine ever letting his hand go.