Lilly has parvo

My 1.5 year old pit mix Lilly has canine parvovirus. The veterinarian has informed us that it's a 50/50 chance of her making it. She has been isolated at the vets and will be kept for 3-4 days so she can be monitored and given medications and fluids through IVs. They estimated that it will coast $3,000 - $4,000. This dog is my world I can't even imagine losing her especially after we just lost our 9 year old boston terrier Webber to liver failure. Even the slightest amount would help.