We have passed the 24-hour (actually close to the 48-hour) mark for no vomiting now, and Bug's 2 (yes - only 2 !!) messy diapers yesterday were yellow not white.
Her rash (and I'm realizing I didn't mention it in the first post - oops - she had a flat red rash from about mid-torso up to her face, kind of speckly) is clearing up too, now it's just around her neck and under her arms, and on her nipples ! Very odd to see it on her nipples.
She's still having lots of wet diapers, and her urine hasn't been overly dark at all.
She's been on straight breastmilk since Monday night. Yesterday I gave her a couple of spoonfuls of broth from some home-made turkey soup, and she ate about 1/4 of a cracker too.
It's been a worrisome week here - the paed did mention hepatitis too, which scared me. But I really think we're in the clear for that - neither of the kids has shown any sign of jaundice, and thier urine has been normal looking.