Author's Note: This is just a different take on the Kataang proposal.
Those in her life who knew her always had said Katara was unconventional. She wasn't a typical water tribe girl and certainly wasn't a typical waterbender. So it should have come to no surprise to anyone that Katara's handling of her relationship with Aang was unconventional as well.
The older girl had approached Toph on sunny afternoon with what was a rather unusual request.
"I want to make Aang a pendant for his necklace and I need your help." The waterbender had asked simply, elaborating on her plan for the younger girl to keep Aang occupied with a rigorous earthbending session while she worked on her gift and added it to necklace.
Toph's part of the plan had gone off without a hitch and Katara had managed to sneak off with Aang's beaded necklace. Carefully working the stone she had picked out with her waterbending, she polished it smooth until it glimmered with shades of blue and flecks of gold. She admired her handiwork before attaching it to the young Avatar's necklace.
"Did you get it finished?"
The waterbender looked up and smiled. "Yes. Thank you."
"Well, Twinkle-toes will be out for a while. I wore him out so much with training he said he needed a nap." The earthbender laughed. "What a baby. So why did you want to make Aang something for his necklace? Is it his birthday?"
"No." Katara said softly. "I'm going to ask Aang to marry me."
Toph's eyes widened. "Really? Isn't he the one who is supposed to propose?"
"Yeah. But I love him. I know I want to spend the rest of my life with him. Why should I wait for him to make the move?" She smiled. "Besides, it was Aang who kissed me first, it was Aang who said 'I love you' first. I guess I just want to show Aang how I really feel and that I am ready."
Katara laughed. "And you know I have to be first for at least one thing."
Toph smiled as she felt a stirring Aang wake from his short nap. "Well, Twinkle-Toes is waking up. No time like the present."
The waterbender beamed and stood, clutching Aang's necklace to her chest. "Thanks. For everything"
Toph leaned back on her hands and smiled as she felt Katara pull Aang close, heard him gasp and take a step backwards in shock. She "saw" the waterbender put the necklace around Aang's neck and she knew that Katara was whispering 'Marry me' in Aang's ear.
And she knew by the passionate kisses that followed that Aang had said yes.
A/N: I just have always liked the idea of Katara proposing to Aang and wanted to do something other than a proposal where Aang gives Katara a necklace and she tearfully tells him yes. They are not a typical couple. I wanted to give them an atypical proposal scene. :)