"Where are you going to keep a tow cable?" she said, only half-joking. "Actually, no, on second thoughts, don't tell me, I probably don't want to know." She leaned against the TARDIS while she waited, never quite taking her eyes off the Master - saying that she didn't trust him with her TARDIS was a completely reasonable statement, because she didn't. Not by a long shot. Turning it into a Paradox Machine didn't exactly lend itself to trust as far as the TARDIS was concerned.

"Oh, is that what it is?" she said vaguely. "And as it happens, you're right, I don't trust you with her at all." She threw a meaningful look in his direction as she strode back into the TARDIS, pulling up a section of grating below the console. "Stay there, and don't do anything stupid!" she called back as she settled herself under the console with a toolbox and the sonic screwdriver.