She gripped the side of the console, anticipating any jarring that might cause. "Terrible idea's better than no idea...but don't we need t'undo th'paradox to undo th'damage?" That...was how it went the last time she'd caused encountered a paradox, after all.

But undoing a crash to fix it seemed like it was more difficult than causing one. "We were both flyin' through time and space when we managed to collide and merge our two time zones, right? Th'car that hit the tree's not goin' anywhere unless you reverse the direction it went, yeah? Left, right, forward, radio and lights, that's not gonna unwrap it. But we're crashed in time, too...so whatever we do t'separate the two has t'be both at the same time, shouldn't it? And where the tree and th'car met, because you don't pull a car, y'push it, and you're not gonna move th'tree."

...Well. At least she's been paying attention to everything he said. And was trying. Even if the car-and-the-tree was a strange metaphor for two identical TARDISes meshing time zones, and might not even apply.