Just realised that this fanfic starts after the experiments from the underground have been cured, and I wrote in my first chapter that Donny was still searching for a cure for them. Oops. I'll try not to make stupid mistakes like that again, and I'll also not write about episodes that won't change because of Kelly's presence – like Junklantis; since it was just Mikey and Donny in that episode, it won't matter that I've added another character, the plot won't change. It would be a waste of time if I told a story that you guys should already know. That being said, don't read this fanfic until you've watched all the series of TMNT; it'll take me a while, but I plan on following the guys' whole story, up to the end of series 7. This is going to be a long fanfic :P

Anyway, enjoy.

Fly on,

NitnatRide

Chapter 2: Adoption

Kelly's POV

Luckily for the turtles, their master actually gives them a few seconds to explain themselves before he sold their hides to the shoe-making industry.

Donny explains how I tripped one of his sensors in the underground – which, I point out, I did deliberately to get whoever had set them down into the underground so I could use whatever they brought to get the cupboard open – and how the brothers went down to investigate in case it was one of their friends. Together we go through the order of events, then I explain why I was down there in the first place with the others helping me to explain my horrific past to Splinter. We practically have to duct tape Donny's mouth shut to stop him going on and on about how cool my abilities are.

Even though we've already described how I knew who he was as soon as I stepped into the lair, Splinter bows to me in greeting, introducing himself.

I return the bow. "Sensei," I greet him. "I'm honoured to be in your presence. If you're anything like the superhero master and father that you are in your son's memories, they are very lucky indeed."

Splinter smiles shyly but proudly. "You are welcome here; in your case, I think I can safely say that the enemy of my enemy is my friend."

It's my turn to smile, and I incline my head in thanks for his quick acceptance.

Turning to the others, I notice them staring at me as if in shock.

"What?" I question, feeling self-conscious.

"When did you speak so…properly?" Mickey asks.

"Formally," Leo clarifies.

I shrug, wondering what the big deal is. "Any human would do it too; when talking with teenage friends, you use a different register – or way of speaking – than when faced with a Ninjitsu master. I can adapt to situations too. Possibly even better than a human because of my greater knowledge and understanding of almost anything out there."

"A computer that can adapt…" Donny whispers, amazed.

My next smile is slightly more forced than my previous ones; after looking at Donny's character – both through his memories and the others' memories of him – I predicted that he and I would get on well. But because of his tech-geek side, I think he sees me more as an interesting puzzle, a brilliant specimen, hence his previous sentence. My heart droops; he's a great guy, but…I hope we can still be best friends, or brother and sister, rather than scientist and freaky-computer-girl.

To distract myself from this depressing thought, I gaze around the room, my ears and smile pricking up once again at the sight of what I immediately recognise as 'Donny's area'; computers and a mock lab set-out gleams and winks at me. Hurrying over to the wheelie-chair I jump onto it and access the computer's content through a twist of my thumb and forefinger in mid-air; the computer's electromagnetic wave is a purplish and sparkling line of light in front of me, originating from the computer's CPU. After opening it, I narrow my search down to plans for Donny's future inventions I saw in his head. In under a second, I'm cycling through his dreams; labelled diagrams, equipment lists, power and energy and weapons calculations…

"Wow, Donny," I grin at him. "These plans are amazing. Everything you want to make holds real potential."

The guys blink, obviously forgetting what I can do; they probably can just seeing me sitting in Donny's chair and wiggling my fingers in the air. But their memories kick in again after a few seconds.

"Uh, thanks," Donny says. "But you could have just asked me to show you. What if I had had secret stuff on there?"

Flushing in embarrassment as my rudeness catches up with my senses, I rub the back of my head, laughing sheepishly. "Oh, yeah, sorry. I was just really excited; I saw that you like working on stuff with technology, upgrading it and building things to make life easier for you guys, and I had to check out your plans."

Donny blinks, then walks towards me, a small grin forming on his face. "You like building stuff? Like the stuff I build?"

I chuckle self-consciously again. "Yeah," I admit. "Plus, being able to do stuff with technology that I can do – like talk to it and control it, or whatever – it's sometimes really simple." I can almost feel my eyes suddenly brighten as a light-bulb flicks on in my head. "Can I help you with your projects? Please? Pretty, pretty please?"

Donny laughs. "Sure, I don't see why not. It'll be nice to have someone helping who can actually speak my language, too."

"Yes!" I cry, jumping up and throwing my arms around as much of my new brother as possible. "Thank you so much. This is going to be so much fun!"

After the guys recover from their shock at my sudden enthusiasm – which I gain control of a little too late – they burst out laughing, and I have no choice but to join in.

"I guess we don't need to worry about you settling in then," Leo winks. "You seem to fit in perfectly, especially with Donny."

"And you can help me with videogames, too," Mikey grins. "I bet you'd be awesome at them."

"Awesome enough to kick your Ninja butt," I promise.

"Oh, it's gonna be so cool having a sister!" Mikey jumps up, pumping his fist in the air, and we all laugh at his youthful zeal.

"Hey, guys," a new female voice joins the conversation, and we turn to the source.

The red hair, tied in a bun, and startling green eyes give her away from the guys' memories; April O'Neil. The buff body-builder with the obvious attitude, piercing blue eyes and shoulder-length blue-grey hair must be Casey Jones, Raph's best friend and human incarnate.

They smile at the guys, obviously used to being here and saying hi to them. Then their eyes fall on me, and their faces turn confused. I look at Donny.

"Story-time, yet again," I say. "I hope this will be the last time; I'm getting kind of tired of telling it over again." I turn back to April and Casey. "You might want to sit down."

By the time I've finished discussing the third version of my verbal autobiography, they are both grimacing in horror by the end of it. But, feeling uncomfortable with their obvious spoonfuls of sympathy, I direct the conversation to them, telling them that my abilities mean I know a lot about them already.

Luckily, Casey takes the bait as I predicted he would. "So you know about how I love sports. Ice-hockey in particular."

I nod, anticipating the next question about my own preferences.

"So what sports do you like?" See? Told you.

I shrug. "All kinds, actually. Despite being fused with technology, I'm no coach-potato. If I'd actually grown up in a normal environment," I explain, my voice automatically slightly more bitter, "I would have played loads of sport; basketball – my favourite, ice-hockey is pretty cool, figure skating, soccer, tennis. I'm not so keen on stuff like football or baseball; they're either really boring or really dangerous. Although, that's kind of hypocritical if I admit I like skateboarding, rollerblading, snowboarding, free-running…. I've never actually played any of these, but I've watched a few matches and examples of all of them; I can basically watch Youtube videos and online TV in my mind."

"Guys," Casey grins at the turtles. "She is awesome. You gotta keep her, seriously."

"Duh," Mikey agrees, grabbing me in a friendly head-lock as I laugh. "She's my new sister!"

We all join in laughing, and I feel a surge of happiness at the sound; I have a family now, who have accepted me so quickly and unconditionally, and friends, too.

"Wait a sec," Casey speaks again, his face looking like he's remembered something. "You said you liked basketball, right? Except you've never seen a match live before, right?"

"Yeah?" I respond, my intonation making it sound more like a question.

"There's a live match on nearby in, like, two days," he explains. "I planned on going to see it with one of my pals, but he cancelled on me, and I still have his extra ticket. You wanna come instead?"

My mouth drops open at his offer, and I stare at him. After a few moments, once I have recovered from the shock, the words tumble out of my mouth. "I would love to! Thank you so much, Casey!"

He grins back at me.

"Alright," Donny says, standing up. "It's late, so I'd better show Kelly to her room. I'm sure she wants some sleep; her body's probably exhausted after crashing earlier."

I smile at him and nod in confirmation, then I say goodnight to everyone, gaining hugs from almost everyone, and a light punch on the shoulder from Raph. Donny and I bow to Master Splinter before he leads me off to a room on the other side of the room, the weirdly ornate doors sliding open as we approach it.

Inside, it's huge, obviously better for something other than a bedroom, but the guys don't seem mind losing this five-hundred-square-feet space. Since Donny said he'd just found it recently, I expected it to be under-furnished; a modest bed – which, Donny explains, was reserved in case any one of their friends needed to stay – is pushed against the right wall with the head-board just right of the door; next to it is a small bed-side table, where Donny places the container of remaining Tryptophan for when I need it; right against the back wall, flat-pack bookcases lie empty and half-built, and a punching bag hangs from the ceiling a little more towards the left wall (obviously a spare one for Raph).

"Wow," I laugh breathlessly. "This is amazing." I turn back to see Donny smiling. "Are you sure you don't want to use this for something else rather than hosting a lodger?"

"You're not a lodger, Kelly," he rolls his eyes. "And, no, we don't mind."

I silently think of a compromise and shrug as I come to a conclusion. "Well, I'll probably just spend time sleeping in here, and kill time out there with you guys, so you can use it for whatever if you need to store stuff or want extra room."

"Fine," he sighs, probably knowing that this is one argument he can't win by logic. "We can get April and Casey to go out tomorrow to buy you stuff, like more clothes and toiletries, but for tonight you'll have to make do." He grimaces in apology. "Sorry."

I have to chuckle at his kindness. "Donny, I've been living on the streets for the past few years; trust me, this isn't rough living."

He grins, then starts walking out, calling goodnight and showing me a switch on the side of the door that locks it when I want privacy for changing or anything.

As the door slides close behind him, I flop down onto the bed, resting my hands behind my head and sighing in delight as the mattress springs slightly, cushioning my fall. This is the life, I think contentedly. Turning onto my side and partially curling up, I smile at the others through the door, hoping they can sense my gratitude.

Thank you, I say silently. I've never known kindness like this. Grinning, I now speak to myself. I've always wanted a brother, and now I've got four. I really am luckier than I thought possible.

Sorry if that's a crappy ending, and sorry if it's a little short. I just wanted to get something up. Luckily I've already written most of the next chapter, so that should be up by the end of the day, too.

If you think this is good enough to continue, could you please leave a review? I've kind of got 13 fanfics on the go, and many more ideas that I may/may not decide to publish, so it's slightly hard to juggle my time. I'm kind of deciding which fanfics to focus on by a) what comes into my head, and b) their apparent popularity. Basically, if I don't get many reviews, then that fanfic is going to be lower on my update priority list. I hope that makes sense :S

Fly on,

NitnatRide