But that's impossible!
"How the HELL did you do that without a ship?" The Doctor cried, still slightly fazed by the fact he was standing on his home planet.
"And how did you survive getting shot in the head?" Sherlock butted in.
"Ah, now I can't answer the first question but the second! Ah, yes. I had aimed it to not kill me. Just here-" He pointed to the back of his throat. "-that's where it hit."
"Clever…" Sherlock mused.
"Doctor, we have to get Becky!" Megan hissed.
"I'm sorry Megan. I'm afraid I can't let you do that." Moriarty said, imitating HAL 9000. "You see, her childish energy and knowledge is perfect for fuelling my vortex manipulating machine, so we can merge these two universes. The energy needed would be doubled, and that's where MORIARTY steps in, to save the day with his endless supply of energy to power the entirety of Earth."
"Does this mean I'll never get to season two of Supernatural?" Becky said through the porthole.
Moriarty sighed. "Yes, you can watch Supernatural in there."
"YAYYYY!"
"BECKY!" Megan screamed. Becky's head turned. "Listen to me! Do you want to spend your life in captivity? Remember when we were younger, I would take you to the zoo and you'd want to free the animals! Do you want to live like that? Please, just try! Try and escape!"
"Megan…I just…I just can't!" She shouted. "I have to." She was sobbing now. "Please, just go! I don't want you getting hurt!"
"Becky, I…"
"Just GO! I'll only hurt you!"
The Doctor dragged a screaming Megan back to the TARDIS. As it dematerialised Becky stared at Moriarty.
"You may have caused me to drive everyone I love out of my life. But I sure as fuck won't let you further destroy the fabric of our existence."
"HAH! You don't even know how to harness your power. Only I know how!"
"You think I've just been sitting here being sorry for myself?"
She started to hover. The box smashed and so did the vortex manipulator. She flew up, eyes white and glowing.
"You won't get out. You can't get out. Goodbye Moriarty."
She started to break up, transitioning between universes.
"No! NO! NOOOO!" Moriarty screamed as Becky was sucked into the space-time vortex of her own universe.
Inside the TARDIS, Megan was sobbing. Suddenly, there was a bang on the door. John opened the door and Becky collapsed onto the floor.
"BECKY!" Megan cried, running for her. She grabbed Becky and hauled her over to the Doctor. "She's hurt! You can do something, right?!"
The Doctor slowly shook his head.
"We mustn't disturb the process. It could kill her."
"Process?" Sherlock asked.
"The regeneration process."
"What…you mean…Becky…is a…" Megan stuttered.
"A Time Lord. When we reach twelve we have our first regeneration. She'll most likely become a 16 year old; that's what most Time Lords become on their first regeneration."
"Did she know?"
"No. I wanted to tell her but I couldn't. Moriarty clearly told her."
They put her in a bed and let her rest. Megan whispered in her ear.
"Please wake up Becky."