Unlike her rambunctious siblings , Jinora is a reasonable and disciplined airbender who takes her spiritual duties seriously .
Jinora ( voiced by Kiernan Shipka ) is the first child and eldest daughter of Tenzin and Pema and the granddaughter of Katara and Avatar Aang .
Unlike Katara 's rambunctious siblings Jinora Jinora is a reasonable and disciplined airbender who takes her spiritual duties seriously .
Jinora ( voiced by Kiernan Shipka ) is the first child and eldest daughter of Tenzin and Pema and the granddaughter of Katara and Avatar Aang .