Chapter 1: Zuko is hospitable.

He is always glad to welcome Toph at the palace and spend all his free time with his dear friend (free minutes, she would correct him only to receive a useless exasperated roll of eyes in response). And he lets her train in the royal garden, though never fails to mention that the pond is sacred, do not ruin the pond, Toph, to which she shrugs and says she'd try.

What Zuko would never know, she thinks, is the extra attention Toph pays to the little puddle, making sure that not a single pebble ever finds its way into it.

(What Toph would never know though, is the fond smile Zuko has whenever he comes to the garden after her training. The contrast between mass destruction of the lawn and a neatly safe pond with turtleducks happily swimming back and forth being the last thing he wishes to see before going to bed.)