Nine years later

Rainie secured her white mask, not really too keen on the colour. She would prefer something more vibrant, but she had made do with white for the last eight years of her life. She pulled a face at her reflection before escaping the room and sneaking into Raph's. He was still asleep, the lazy shellforbrains.

Rainie looked around the room. Something to stand on... something to stand on... aha.

She smiled to herself, looked back at her brother to make sure he was still asleep. There was a random crate in her brother's bedroom. It surprised her when she found it light. Light enough to lift, even though it was as tall as her shoulder and about two feet wide.

She carried it towards Raphael, who snorted in his sleep and rolled in his hammock, his shell to his sister. Rainie lowered the box quietly and managed to clamber on top of it. Raph shifted in his sleep, rocking the hammock. Rainie waited until it stilled, before jumping off the crate and landing on her brother.

Raphael woke with a start, struggling against his sister. There was a sharp snap as the hammock supports broke. The two of them tumbled to the floor.

"WAKE UP!" Rainie shouted, her wrists held in her brother's hand, his blanket draped over her head.

"I'M UP!" Raphael shouted back. There was a seven year age difference between him and his sister, but they had the maturity levels of a six-seven year old when together. "You broke my hammock."

"Na-uh. That was you, heffalump."

"You."

"You!" Rainie smiled sweetly. Raph faltered, and then pulled himself together. "Oh, breakfast's ready, but be warned, Don's cooking."

"Oh great. An early wake up call, followed by indigestion."

"I'm telling!" Rainie challenged, her voice childish and taunting. Raph held onto her.

"You dare..." He mumbled.

"DONNIE! DONNIIEEEE!" Rainie shouted. "DONNIE! DON-mmph!" Raph covered her mouth. She started to struggle, having a stubborn streak a mile wide. She wasn't going to give in. Somehow, she managed to spit on Raph's palm.

"Eww... Rainie!"

"DONATELLO!" Rainie shouted at the top of her lungs as her brother wiped her spit off with his fallen hammock. "DON! RAPH SAID YOUR COOKING WILL GIVE HIM INDIGESTION!" Raph tackled her, trying to cover her mouth and silence her.

"Raph, what's going on?" Leo walked into the room, amusement and confusion etched on his face. He spotted Rainie struggling under Raph's weight, he pinned her down underneath him, his hand over her mouth. "What-? Why was she shouting?" Raphael made to answer when Rainie bit his hand.

"Ow!" He removed his hand quickly.

"DONNIE! GET YOUR GREEN BUTT HERE NOW!" Rainie shouted before Raph covered her mouth for a third time with his other hand. "MMM!" She protested, struggling even more.

"Raph, let her go." Leo said, trying not to laugh.

"Don, Rainie's calling you!" Raph and Leo looked at each other, before looking in the direction of the door- Mikey had heard Rainie shouting (apart from Don, who hadn't?).

"Watch this a minute then!" Don called back. He appeared in the room a short while later. "Rainie, what-? Raph! Get off her!" Don grinned. Raph looked down at his sister. There was a triumphant gleam in those green-brown eyes.

"Whatever she says, she's lyin'." Raph protested, smiling. Suddenly, Rainie stopped struggling and went limp. Raph's smile vanished just as quick. "Rainie?" Her eyes were closed. "Rainie?" Even Raph noticed the panic in his voice. He moved his hand away, suddenly scared.

"Raph, get up." Don said, Raph's worry mirrored in his own voice. Raph did quickly, moving to his sister's side. Leo hovered behind Don, who knelt opposite Raph. "Rainie? Can you hear me?" Don checked her pulse, before leaning over her to see if she was breathing. After a few seconds, he smiled. "Oh, very clever." He sat back on his heels as Rainie sat up, as right as, well, rain. "Now, what did you say about my cooking, Raph?" Rainie grinned up at Raph, who glowered at her. But he could never stay angry at his sister for long.

"I'm goin' off you." Raph muttered to Rainie. Her eyes sparkled cheekily. "And I said nothin' about ya cookin'..." Raph pulled his sister into a hug, trying not to hold her too tightly. "I thought I really had hurt ya then."

"Me? Hurt? By you? Nah, not likely, bro." Rainie smiled at him.

"Hey! This breakfast's getting burnt!" Mikey called from the kitchen.

"Serve it up then! We're coming!" Leo called back.

Five minutes later

Mikey cracked up laughing. His brothers had just finished telling him and Master Splinter Rainie's latest trick. Rainie smiled innocently, before catching her father's eye.

"Rainie, that was very silly. You gave your brothers a lot of worry." Mikey was trying to stifle his laughter, covering his mouth with both hands.

"Sorry, Sensei. Sorry guys." Rainie looked up at Mikey, who couldn't stop laughing. "Hope you like the laughing pills, Mike."

"Laughing pills?" Donnie asked.

"Yeah, laughing gas in the form of pills. Put two in his juice."

"It does wear off, doesn't it?" Don watched his little sister as Mikey doubled over in his seat with laughter.

"Yeah, I'm not that mean. Give him a minute. He only had a weak dose." Rainie smiled innocently as Mikey struggled to stop laughing.

Mikey, true to Rainie's words, calmed down after a minute or so. He still giggled feebly, leaning back in his chair.

"T-that was a g-good one, sis." He smiled weakly. Rainie grinned cheekily. "Where'd ya get those laughing pills anyway?"

"Erm... Leatherhead helped me."

"Go figure. I don't think he was too pleased with his alarm going off every hour the other day." Mikey shook his head at his sister.