She couldn't see. The Doctor's heart sank as he realized that his ship, his beloved TARDIS, couldn't see what he saw, couldn't see what her other self must see, if she still carried him through time and space without protest.
... no. No, that wasn't right. She wasn't his ship, wasn't his TARDIS. She belonged to another Doctor, a different Doctor, a Doctor who agreed with the renegades back on Gallifrey, a Doctor who, if they were anything at all alike, was willing to stop him.
Would that Doctor go so far as to send the TARDIS to him as a spy? Or perhaps something else? Something worse.
The Doctor drew back, his expression growing dark. "You're here for him. You're here because he thinks I should be stopped. Is that what you're going to do? Stop me? Well it isn't going to happen? Do you understand me? I won't allow it! Get out! Go! Now! I don't want to have to change you, but I will. I'll rewrite your entire timeline from its very beginning. His, too. If you want to keep either of them even remotely intact, leave! Don't come to me again!"