Something was definitely off. The girl knew me, and apparently everything about me. She knew Rose and Donna and the TARDIS. She hadn't seemed at all surprised about me turning up. My first thought was that she was an alien, but who had the power and knowledge to pull the TARDIS off course, much less put it in a certain spot? And then, why ask me to move?
I left the girl doing homework and returned to the TARDIS. From there, I inspected the girl's life reading, which was most definitely human. But she wasn't a super genius, nor did technology at this time have the ability to affect a TARDIS. Most humans didn't even know it existed. Something else was there.
Suddenly, the life reading changed. It looked like another being was cramming itself into the girl. Last time something like that had happened, a woman named Cassandra had used illegal technology to take over Rose. I turned, left the TARDIS, and charged back up the the house.
I stood in the doorway to the dining room, watching the girl, who remained still, albeit with an exasperated expression, like this happened often. Abruptly, she sighed with relief, then gave a groan of pain and lay her head down on her binder. Eventually, she raised her head and continued working on her homework. I slipped out the door and returned to the TARDIS. The second thing was gone, leaving only the girl.
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I went back to watching Dr Who, but I switched to and episode that I was sure had already happened. With the Doctor in the house, I had to be careful to avoid spoilers. His rules.
Just to stay on the safe side, I was browsing some episodes of the Ninth. It was good that I had taken precautions, because then Donna wandered in.
"What's on?" She asked.
"Nothing interesting. In this day and age, you can just watch things that have already aired," I replied.
"So what's this?"
I didn't have to answer because a second later, Rose yelled, "Doctor!"
Donna froze. "Is that the Doctor I'm thinking of?"
"It is."
"But that looks nothing like him!"
"He used to look like that."
"But how did he get those ears?"
"Oi!" The real Doctor had returned.
Donna rounded on him. "Did you really used to look like that?" She demanded.
"Yes," was his calm reply.
"Did you tell you about regeneration?" I asked.
"No."
So he gave a miniature explanation of what happens to a Time Lord when he is about to die.
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At least I know how the girl knows everything. There is apparently a show about me. It includes my future, but the girl refuses to show them. "Your rules" was her only explanation. It reminded me of River. When I mentioned this, the girl just said, "I know. That's where I got it."