It was, in retrospect, quite fascinating and even notable for Zuko to stop and think. Azula was not being dismissive. No, she noted Zuko's display of maturity and patience in response to her idea with almost a note of pride. This, she thought, was the first mark of a Fire Lord: strategy and rational thought. The past year of leadership and responsibility had changed Zuko; as much as the scribes had changed Azula.
For their entire lives Zuko had been rash, outspoken, impulsive, loud-mouthed, and often, stupid, emotional, and irrational, or so at least, Azula thought. It was, she believed, what had led to their father's punishment and exile of him. If only dumb Zuzu could have kept his mouth shut or acted with even a modicum of cunning. Of course, her view on all those events had changed in the past year, but even upon meeting Zuko again after his exile he'd been stunningly easy to trick. Even when he had returned to the Fire Nation, Azula saw his constant hesitation, second-guessing, short shortsightedness, and general lack of complete confidence. Outbursts were common. She knew that Zuko could be the heir apparent he was always meant to be. Yet, he could never act like it.
But now for the first time that Azula could ever remember, she saw Zuko hesitate. Her chin lifted in mute curiosity and slight amusement, but not judgement. She wanted to see what his brief pause for thought would net him. If Azula truly had been setting a trap, she would twist the knife, make him double down on his first, hassled impulse. Many times bit, Zuko was well afraid of her jaws. But no, she waited, and Zuko did not take the bait that was not there. What a bizarre interaction for them, as siblings that is. In their childhoods, none of this would ever play out like this. Azula would have much to think about in the coming days.
She would have to decide if she liked this new image of herself and her brother.
"Very well," Azula said curtly. She bowed to him, the gesture holding all the meaning she intended to convey. "I assure you I will not be going anywhere, any time soon. My training and meditations will continue; perhaps one day, I will be of true use again. However, when you have need of me, you will know where to find me." And because well, she truly couldn't resist, Azula smiled, teasing. "Don't be a stranger, Fire Lord Zuko."
Zuko departed the island that evening. Azula did not think that he would be back, truly. Although, she also was certain that he would not find the letters on his own. She expected a letter. Thus, she went about her days as usual: awakening for morning meditation, training, scribal work, and the regimented rhythm of life at the temple. It was slow progress, rebuilding the power she had lost at the end of the war but Azula felt that everyday her fire return to her. Increment-by-increment, but a slow progress was still progress. But a handful of days after his departure, Zuko returned. It was late afternoon, during a couple hours of personal time allotted to the scribes everyday. Having seen his ship approaching from atop the mountain, Azula waited for him at the gate.
They exchanged formalities and she tilted her head towards the living quarters.
"Lets go inside, we just brewed some tea," Azula commented. "We can talk in my room."
As she said, the scribes had brewed tea. They handed over a tray with a fresh pot, cups, and a few light snacks; which Azula carried upstairs. Her room was the second on the right, kept tidy and neat, with a table on the floor which she indicated Zuko to sit at. Politely, she poured them their tea.
"Don't look shocked by the meager accommodations, I've learned to make do." She chided.