Nora

Long after avatar Aangs story, Nora is born in wolf cove. She grew up in a very sheltered way and never really mastered the way of water bending. Just that recently there were commotions between the different nations, after the old Avatar died and it was rumored that the fire nation soon would launch an attack, using the moment of no Avatar currently being present. So Noras father grabbed the chance, even if very reluctantly, and started teaching her so she could defend herself in chance of an attack. You are Noras best friend, you two grew up together and were always by each others side.