Okay so I originally wrote this for a prompt for Linzin week, but I've decided to continue with it because this AU makes me happy ^-^
Lin stirred to the sound of small, light footsteps racing down the hallway outside of her room, causing her to groan and turn over, burying her face into her pillow. "Go back to bed!" The woman's normally deep voice was scratchy with sleep as she yelled, making the statement sound much harsher than it was meant to.
She sighed when the door opened just a crack, a small, grinning face showing. "Momma, momma, momma! It's Ikki's birthday! Get up!" Lin sat up, stretching her long, toned body before standing. "Sokka, you really didn't need to wake me up this early. It will still be your sister's birthday in a few hours." Sokka watched as his mother stifled a yawn, her jade eyes showing nothing but affection despite her harsh tone. "But daddy and Meelo made a big suprise for her, momma!"
Lin almost laughed at the scene that greeted her when they reached the kitchen. Flour was strewn everywhere, along with various other baking ingredients. "Tenzin, this place is a mess!"
"I was trying to make a cake." Her husband said, a frown on his face and his long arms slouched by his sides. "In my defense, Meelo helped!" He looked over to where the little terror was mixing who-knows-what in a rather oversized bowl while he sat on the table, his tongue sticking out in concentration.
"Meelo, get down from the table." His mother barely managed to hide the affectionate smile at the sight of her youngest child. "Where are Ikki and Jinora?"
"Nora's keeping Ikki busy while we make the cake!" Meelo said, jumping from the table to land lightly into his mother's arms.
"Meelo, you're getting flour all over me!" That one statement had been all that Sokka had needed to launch an attack. "SOKKA!" Lin yelled as a handful of flour hit her back, but the boy only snickered and tossed another handful at his father.
Suddenly, Meelo and Tenzin had joined in, and before long, Lin found herself in the middle of a flour war with her husband and two sons. The four ended up on the kitchen floor, laughing when the door opened, the footsteps so light Lin could hardly feel them through the ground.
"Mom- What...?" Jinora stood at the door, dumbstruck at the sight of her parents and brothers covered from head to toe in flour, but Ikki only jumped around excitedly, babbling incessantly about it being her birthday.
Lin laughed at the expression on her oldest child's face, her hand unconsciously going to rest on her flat stomach. It was funny, she'd never wanted kids, and now here she was about to have five. And she couldn't imagine her life ending up any other way.
(Yes I did add another son a little older than Meelo (I had to have a little Sokka) and implied!Rohan hahaha)