Dont Give up !!!
We too had a puppy that had Parvo. We didnt know she was sick until about 24 hours after we had her home. She is a little shephard/chow mix. Anyhow, we had her hospitalized and we tried EVERYTHING to get her to eat. It took her about a week to come around, we offered her all kinds of food. The Vet said keep trying different things. Finally she ate a McDonalds Hamburger!!! I was never so happy to see a puppy eat in my life! So dont give up. Our vet said to visit her every day and spend time with her, to encourage her will to live since she is so depressed. Keep positive thoughts!!!
Good Luck!!! We will pull for her.
Shar & Family