Her first urge was to scream at him. To demand he stop acting so strange and start being himself again. Yet, she knew, that wasn't going to work. The mask she held in her hands said as much.
So rather than yell, or walk away (which was her second urge), Katara tried to remain as calm and logical as she could. She exhaled slowly and moved forward, sitting down beside him on the bench without even bothering to ask if she could. Studying the mask for a moment, she glanced sideways at Zuko and asked but one question.
"And what do you think your uncle would say now, if he were here?"