Jennifer, was watching that thread earlier (couldn't offer any advice unfortunately) but how lovely to see MN working as intended, with people like you going the extra mile to help out others - good on you. Makes a change from some of the current threads.
take note of the advice beautiful girls gives me asshe is a vet and has always helped me out in the past xx good luck and let me know how they get on. Although at 3 weeks they should be up and about so maybe try weening them onto kitten food and cat milk?
Have they got an animal rescue centre nearby? Secret wrld in somerset was the one near us, and as sister worked there, she often ahd kittens being bottlefeed at home- they also handed out special milk and bottles etc.