"Really? I've always wanted a sonic screwdriver. Thought it'd be fun to take apart and figure out how it works. Then again, I might not be able to, seein' as it's alien and all. Course, I might be able to. Then I might have a problem puttin' it back together. And what if I put it back together and instead of creatin' a sonic screwdriver, I made some other device like a tiny paradox machine, or a bomb. So I guess I should be happy to know that it can track DNA." Fred smiled, wanting to be of help and not really knowing how she could be.
"Seems strange that she left. Or maybe it doesn't. I guess I'd go away too after seein' that. Sorta am goin' away, aren't I?" She motioned for the Doctor to lead the way; this was certainly more of an adventure than she'd set out to have that day.