Sh-she hurt me Zuzu

Zuko finds Azula hurt by Ursa because she was going to the turtle duck pond to feed them, she ran out of bread so use started tossing rocks in to watch them sink. Ursa thought she was aiming for the ducks and yelled at her, not letting her explain herself, in a rage she slaps Azula for denying it and throws her into her room.
Sibling bonding and fluff, including some stealing of fire flakes and scones from the kitchen
People aren't born monsters, they become or are made into ones.