Depressed....... HELP!

Hi there Everyone! I am new to this site and registered because I need to talk to someone. I recently purchased my little Juicy from a breeder in Albany. It was love at first sight. She instantly won my heart and my daughters heart. The breeder told me she was up to date with her shots and that she was perfectly healthy (which she seemed to be) After 4 days, Juicy began to have smelly diarrhea and vomiting. I immediatly took her to the local vet to have her checked out. 85 dollars later the vet told me she was fine. I was so excited to hear that my little baby was going to be ok. I went out to Petco and bought her new puppy food, outfits, and toys. When I got home I found Juicy to be very depressed and asleep on vomit. I picked her up and began to panic so I rushed her to the emergency hospital. My nightmare was only beginning. The doctor told me that my baby girl was positive for parvo! How could this have happened? I was crushed. The doctor told me that they could try everything they could to keep her hydrated but the chances were slim being that she was only 3 months and barely a pound. I was prepared to do anything for my little girl until she told me that the hospital stay with 24/7 care was going to cost me 4 to 5 thousand dollars. I felt my air leave my body. I dont have this kind of money to spend. So what was I to do. I could not let her die. I had to give up my rights. This was the hardest thing I ever had to do. I had to say goodbye to my precious baby. She licked my face as I said goodbye and sobbed. I am so heartbroken. The breeder told me he would replace her with a new puppy but that puppy is not Juicy. I am so afraid to get another dog and have my heart torn out again. Any suggestions? I would really apprecite it.