Rose laughed in spite of herself. Not the right reaction, but she couldn't help it. "Not nice," she agreed, "Very rude and ginger. You must be the reason they say gingers have no soul." An atrocious joke, and she's not even apologetic about it.

"I can't," she shook her head. "My mission is to stop the darkness spreading and find allies. I don't know that the Doctor would actually know anything, like I said, he can be really daft. So I can't just..." She closed her eyes, but it didn't stop the grimace of extreme pain, "Risk the collapse of two or more universes just because I lo-- miss him."