I'm sorry about your baby. Parvo is a terrible disease. Here's a couple of organizations that help pay vet bills for those truly in-need (if you know what I mean). If the vet is AAHA accredited AAHA w2ill give a one-time payment of up to 500.00 to those who qualify.
Angels 4 Animals
www.Angels4Animals.org helps with financial aid.
God's Creatures Ministry
www.all-creatures.org/gcm/help-cf.html has a fund that helps pay vet bills.
IMOM
www.imom.org say they are dedicated to insure companion pets are not euthanized because owners are financially challenged.
Hopefully this is still current information, I received this list several months ago. I hope both of your babies will be fine.