We have a serious need for prayer here... (Cinder & Smoke.. please get on the horn to God ASAP!!! )

My friend has rescued a five week old kitten (an orange tabby named "Crush" and she's a SHE!!) and it's very sick! She weighs half a pound and is malnourished (rescued from a barn). She has been to the vet, but of course he's closed now, and she just puked her antibiotics. Here are her symptoms:

lethargic
diarreah (4 days)
some vomiting
only active for 30 mins but sleeps the rest of the time
not eating
cold - temp. is 33 degrees celcius
does drink some
weak
dehydrated

The vet thinks it might be coccidia, but other things can't be ruled out because she is too young to be tested for leukemia. She is taking antibiotics but she just puked her first dose (after ~2 hours).

Any advice would be appreciated, and LOTS of prayers.. we want little Crush to pull through and live a long and happy life! My friend makes an excellent kitty mom so Crush is in great hands!!

Thanks!!!