Agree with ginger! Please don't waste time ipon here and get her to a Vet!! Yes, keep her warm and you might try some sugar water or some Kayro syrup.
Please take her immediately to the vet. I can't tell you what is wrong with her. If the vet is closed, take her to ER vet, or if you are in UK call the vet's number and usually there will be a recording telling you another number to call for emergency. Keep her warm while you are waiting to see the vet.