Well, leaving her alone was abad idea, as was maybe trying to help at all. One kitten is gone, but two are here in the house with me now. I went in this AM and found one back in the litter box (alone), one in her wet food dish, alone and a one dead in the middle of the floor. She is under the desk again, and does not appear to be much smaller.
I am very disapointed, but she is a feral first time mother (and LAST TIME!)
Kittens 2 and three are tabby cats with white socks and noses. One is VERY polydactly (like my daisy-cat!) They each had a small amount of KMR and are napping in a towel on a container of warm water.
Open to suggestions- my vet said put them back in there and let nature take it's course. I feel bad enough for #3, who WAS alive last night.