"What are you doing with that?" a brusque Scottish accent asked over Rose's shoulder.

She didn't look up, already knowing who it was, and secretly grinning to herself. She kept tooling away on her cannon.

"Did you know space is actually pretty quiet?" she unscrewed pieces of the alien tech, cannibalizing it to see what she could do with it.

"It fucking is not," he growled derisively.

"It's true," Rose replied, not even looking up, just unfurling her blueprints. "It's a vacuum of course, so even though every star has its own signature sound, the space between is empty, it's very quiet."

He didn't say anything, and didn't move to block her light or move to her field of vision, so she pretended she didn't notice either.

She screwed some pieces back together, and held it up like a bazooka, one eye closed, as she pointed it at the light.

"In space, no one can hear you blow up your ex's planet," she drawled in deadpan.

He left without a word after that, much to Rose's eternal internal amusement.

Of course Gallifrey wasn't anywhere to be blown up, but then Rose hadn't been serious about any of it anyway.