My dog Muffin had parvo at 6 months, she's 10 months now, and after a stay at the vet and much arguing with the vet we took her home and gave her fluids (for about 3 days) and antibiotics ourselves. We gave her an IV drip every 12 hours though. She was too far into the dehydration to drink or eat on her own.
If I were you I would just watch her pretty closely and give her lots of love and affection. Make sure she is drinking water and having her antibiotics, because the main thing that kills dogs with parvo is the dehydration and secondary infection. It will take awhile, but she should get better. Muffin bounced right back, but not all dogs are the same.