If I only have to look at it for ten minutes, turns out I can work on this wretched rewriting thing. Yesterday I picked the first page in Toothbrush that had no writing on it (I assumed that's where I'd left off, on page 3) and marked it up. Then we went out to play for a few hours, and when we came back I made my changes in the draft.
That wasn't so bad, now, was it?
Turns out, actually, that I had marked up page four and five earlier, but whatever. I got rid of two named characters, turning their dialog into an introduction to two other characters, the kind-of Nemisi (I have a vague feeling you can't really have two nemesises, it's a word that seems like it shouldn't take a plural) of my main character.
Maybe later I'll change their names (to protect the innocent). I think I know their true names now.