"I don't want to go," The Doctor states before twirling around, finally spotting me. "What!?"
"Hello," I state, wiggling my fingers in his direction. He moves to say something, but he gets distracted by his regeneration. The jets of energy shoot out of his hands, one hitting me square in the chest and knocking me over. I moan in pain on the metal floor, grabbing at the wound. I look down and see no blood, but what looks like dying gold embers spread over the area. It disappears quickly, leaving no trace. I look up and see a new man in place of the Doctor, looking himself over.
"Legs! I've still got legs, good. Arms, hands. Ooh, fingers. Lots of fingers. Ears? Yes. Eyes: two. Nose... eh, I've had worse. Chin- blimey! Hair... I'm a girl! No, no! I'm not a girl. And still not ginger! There's something else, something important. I'm... I'm-I'm... Crashing!" He runs to the console and flips a couple levers. "Geronimo!" I stand up quickly, my head rushing with new memories. "Who are you?" He asks as the TARDIS starts shaking.
"I don't know!" I exclaim, smiling. "Isn't that great?"
"You look familiar.."
"Sorry, but there's more important things to do right now!" I cry, grabbing hold of the console. He does the same, dropping the subject completely.
"I don't know what's making the TARDIS go wibbly!" He shouts over to me.
"Your regeneration, you dumbo!" I yell back, flipping a switch and pulling a lever. "You blew up the steering!"
"It's not like I could help it!" He grabs his screwdriver and heads for the door, flinging it open.
"You could have tried!"
"Oi," he states, turning to me. "Watch where you're driving there, we almost hit Big Ben."
"Sorry, I'll do better next time!"
"Wait a minute, you're driving!"
"Yeah, and?"
"The TARDIS! You're driving my TARDIS."
"What, like it's hard?"
"No one can-"
"Hold on!" I interrupt, having to make a hard turn to avoid a building. I look over to see the Doctor's hands peeking out of the doorway.
"Help!" He cries, waving one hand to get my attention. I abandon the console and run to help, pulling him back on board. "Thanks, but now we've lost all hope of steering this thing back to safe sky. We're going to crash!"
"Not if I can help it," I say, determined. I run back to the console, pushing buttons and pulling levers, as many as necessary for a quick and easy landing. "Hold down that lever!" I command, holding down its twin on the opposite side of the console.
"What are you doing?" The Doctor shouts at me.
"Saving your ass." I reply as the whirring depleted and we came closer to a stop. "I'm good." At that exact moment, the TARDIS tips, launching us down the corridor. In the scramble of the surprise, I reach out and find a gravity boot attached to the floor.
"Ohh!" It finally dawns on me as to what the interface meant earlier. "Sorry!" I call to the Doctor. The only response is a splash, meaning he landed in the library's pool. I look up, seeing two more gravity boots within my reach. I reach for them, using the previous as a foothold. Slowly I climb, making it safely out. Once out, I flop on the ground, gasping for breath. Looking towards the sky, I notice a little girl standing a few feet away, looking surprised.
"Hello," I say cheerfully, jumping to my feet.
"Who are you?" She asks.
"I don't know, but there's something I need to do right now that's more important." I get closer to the TARDIS, opening the phone compartment. I reach past it and search for the little button, pressing it when I find it. The phone slides away, revealing a large cool of rope. I unwind it, dropping it into the open doors.
"Thank you!" I hear faintly from the Doctor.
"You're welcome!" I yell back.
"Stay where you are, I'm coming up."
"Make me!"
"Cheeky! I'm going to keep you."
I smile to myself and turn to the little girl.
"Can I use your kitchen? All I want to do right now is bake something," I tell her, earning another confused look.
"Sure, I guess," she replies. I nod a thanks and run towards the house, laughing the whole way. I heat up the oven, and quickly make some cookie dough in less than a minute. I'm placing the ready pans in the oven when the Doctor and the girl come in.
"Hello again!" The Doctor says, smiling at me.
"Heya!" The little girl hands him an apple promptly. He takes a bite out of it, spitting it out almost immediately.
"That's disgusting, what is that?" He asks the girl.
"An apple," she replies, as though it's the most obvious thing in the world. Oh yeah.
"Apples are rubbish, I hate apples."
"You should get that on a shirt," I comment, laughing. He shoots me a glare, and I shut up immediately.
"You just said you loved them," the girl says.
"No, no, what I meant was-" his mouth speeds off at a thousand miles a minute, neither the girl or I was able to understand his gibberish. I grab a cookie and shove it in his open mouth, startling him out of his monologue.
"Better?" I ask, knowing it worked.
"Your baking is fantastic, I'm definitely going to keep you," he says, his mouth still full of food.
"Do you still want an apple?" The girl asks, confused again.
"No, but now I know what I do need." He heads for the fridge, grabbing something from inside. He holds it up for us to see, and it makes me gag. "What? What's so wrong with fish fingers and custard?"
For anyone wondering what the hell just happened to her- She was hit with regeneration energy, making her human-time lord mix. Since she was born as a time lord-human mix, it basically just made her time lord-time lord-human. Kinda like the metacrisis, but balanced enough so she won't die. She also lost most (if not all) of her memories beforehand.
Hope that clears things up a bit!