Saving Hissy and family from parvo

This is Hissy. She is about 2 months old. I got her from a rescue along with a brother and a sister. Unfortunately, the siblings have died. Hissy is currently at AV Animal Clinic due to having Feline Panleukopenia (commonly referred to as Parvo or Distemper). This is unfortunately a pretty deadly virus. Hissy has been on IV fluids and antibiotics for about 30 hours now. So far my total for her is about $1,200 if she is picked up tonight. I also spent about $500 on her sister for the 4 hours of treatment she received. She is doing really well! She is alert and playing. Her chance of survival is about 20% but I told the vet to do EVERYTHING possible to save her.