She might live if she is under treatment and get fluids inside her and not getting dehydrated then she has a great chance of living. I had a 6 week old pup survive parvo and grow up to be healthy. The main thing is to keep her hydrated at all times. After she gets over the parvo the bloody stool will go away. Feed her whatever she wants to eat if she is eating. If not then you can get ensure down her with an eye dropper if she wont drink. Pedalite will help also. Just anything the has stuff in it that will give her vitiams. Follow what the vet says also and good luck to you both.