The Doctor led Rose towards the infirmary with a plan forming in his mind. He knew that because Rose was reluctant to become the Bad Wolf again she'd need a little nudge in the right direction. So he was going to ask the TARDIS for help.
"What're you going to do?" Asked Rose nervously as the Doctor sat her on a bed and began to tap at the keys of a computer.
"Going to take a more in depth look into your head," the Doctor said quietly, looking up at her. "I need to find out what part of you the Bad Wolf resides in."
"Great," Rose said looking down at her hands. This was all she needed, the Doctor poking about with her brain.
"Sorry," he said walking back from the computer and taking a few sucker pads from a table. "If there were any other way…"
"I know," Rose sighed as the Doctor stuck the pads to her head. "I just want to get this over and done with."
The Doctor smiled slightly, tucking her hair out of the way so he could stick the final pad on her temple. His fingers brushed against her cheek as he bought his hand back to his side and Rose wasn't sure whether he'd done it intentionally or not.
"Right," the Doctor moved back to the computer once more and sat on a chair tapping at the keyboard, glancing up at the screen occasionally. "It won't hurt, you probably won't even be able to tell that anything's happening, but it might take a while."
Rose sighed again and lay down on the bed, her arm behind her bed, staring at the Doctor. She could see the bruises on his hands and face still and it made her heart ache more.
"I've already told you it's not your fault," the Doctor looked up at her grinning. Rose frowned startled.
"What?" She asked. How had he known what she was thinking about? The Doctor turned the computer screen so she could see it and her heart skipped a beat as she saw her own thoughts on the screen.
She turned pink as the Doctor turned the screen back and tapped a few keys. She groaned and covered her face with her hands.
"Sorry," she said looking at him again.
"S'all right," the Doctor replied. "I'm going to have to sift through all your thoughts and emotions anyway. You're going to have to put up with loosing your privacy."
Rose rolled her eyes and swung her feet off the edge of the bed.
It's not like you haven't seen everything anyway.
The Doctor looked up grinning.
"Now you're getting it," he said glancing back at the screen.
Will you even be able to find the 'Bad Wolf' part of me? If you can't detect the nanites…
"I hope so," the Doctor replied. "The TARDIS helped you unlock the power before, so she should be able to find the Bad Wolf."
Several hours later the Doctor had still had no look in locating the Bad Wolf, but he still had hope, especially since Rose was reluctant which would make it harder to find anyway and the Bad Wolf would probably have hidden itself.
Rose was starting to get freaked out again because the nanites had detected the intruder in her head and different people and creatures were swarming round the pair of them. Fortunately Rose was getting better at controlling them and the Doctor had so far, received no injuries.
The computer suddenly bleeped and Rose looked up the nanites forgotten and all her imagination creatures disappearing. The Doctor frowned at the screen for a few minutes before looking up at Rose and grinning.
"Bingo," he said. "Bad Wolf located."
Rose smiled anxiously sitting up and hugging her knees to her chest protectively. The Doctor tapped a few more keys and then glanced once more at Rose.
"Ok, I can stimulate that part of your brain but I-" The Doctor stopped suddenly as something else blipped. "Well that's not supposed to happen."
"What?" Asked Rose wandering over to look at the computer, trying not to trip over the wirers attached to her head.
"Bad Wolf is searching the TARDIS systems for something," the Doctor said frowning as hundreds of different files opened on the computer whilst the little bar at the bottom said 'Bad Wolf Searching'. "What's it looking for?"
"It's trying to bypass the security by searching for the passwords," Rose said before she could stop herself. "But it's all encrypted in Gallifrey. I can't understand it."
The Doctor frowned at her for a moment before halting the searches and typing in the passwords himself. The Bad Wolf continued searching and Rose pulled up her a chair herself, pulling the keyboard towards herself.
"It's looking for something called 'Frey 9'," Rose said typing and bringing up extra files whilst the Bad Wolf encoded some more files.
"Rose," the Doctor said but Rose didn't stop. She found what she was looking for after a moment. A little glitch in the system, something was wrong. The Doctor had been so wrapped up in helping Rose he hadn't noticed the TARDIS's warning.
"Someone's been following me," Rose said, glancing at the Doctor as he looked over the file that had been opened.
"Not just you," the Doctor said a note of worry evident in his voice. "They've been tracking the Bad Wolf."
"But look at this," Rose said opening another file. "They want the Bad Wolf because of her relationship with The Oncoming Storm."
The Doctor nodded.
"Looks like we're in trouble," he said. The TARDIS jerked suddenly.
"They've found us," Rose whispered her eyes wide with fear.
They ran back to the console room, Rose pulling the pads of her head, the Doctor frantically trying to find out what was pulling them down an on which planet they were about to land.
"No," the Doctor stared at the screen on the console in disbelief as the TARDIS threw them about all over the place.
"What?" Asked Rose though a part of her, the Bad Wolf she assumed, already knew where they were landing.
"According to the TARDIS the Daleks are trying to take over Earth," the Doctor said quietly his face pale. It was the worst possible situation. The Doctor was going to have to face his worst nightmare and Rose was going to have to protect her family.
"But I destroyed them all," Rose said looking at him pleadingly as though he might be twisting her some sick joke. "How can they still be alive?"
"I don't know," the Doctor said, though in reality he had a very good idea where they'd come from. On the screen he could see nothing. Some invisible force was exterminating the people of Earth. It was Rose. There weren't any Daleks; they were being created by the nanites.
They must've realised the Bad Wolf was going to try and stop them and conjured up the power to work for themselves. Rose did indeed look very pale as though all the energy had been sapped from her.
"It's me isn't it?" Rose said watching him stare at the screen. The Doctor looked up shaking his head.
"Rose," he began but Rose put a hand on one of his that was leaning on the console.
"I'm creating my own nightmare aren't I?" She asked sadly. The Doctor looked at her and was sure that the truth would kill her if she knew, but he couldn't keep it from her.
"The nanites are taking their energy from you and the Bad Wolf," the Doctor explained. "They're not trying to help you anymore; they're working for their own means, which leads me to the conclusion that you weren't infected with them by accident. Someone wanted you to loose control and destroy your own planet."
"How do we stop them?" Rose asked, rubbing her thumb along the back of the Doctor's hand gently. The Doctor looked at her wondering whether to answer her question or not, but Rose knew what the look meant. "I've got to do it. Me and the Bad Wolf. Alone."
The Doctor nodded solemnly.
"The world is in your hands," he said quietly.