How can they be so cruel?

My old puppy “Macy” (my name is Chelsea) got sick from the disease Parvovirus. Some of you may know of it some may not. But anyways, she was about 8 weeks when we go her. She got sick toward the end of July, with bloody diarhea and she was puking. (About this time she is 10 weeks) We took her up to the animal hospital and they diagnosed her with parvovirus. We asked if they thought she would make it. They said it could go either way… I was devatated because I loved her like she was my baby. And so they said that they would keep her and give her treatments for it and let us know each day how she was doing. The night before we took her up there, my mom was sleeping upstairs and Macy was downstairs lying down by me. All of a sudden she started puking. I cleaned it up and after while she was fine and I put her in her kennel for the night to go to sleep, and about 15 minutes later when I was upstairs I heard her barking and whinning. So I go down stairs to see if she is okay and well she had blood and diarhea in her kennel. So I put her outside on the leash, take the kennel and her blanket that was inside it and I take out to the other side of the house clean it up with lots of soap and then I go and get her and wash her butt off since she had some on herself and all that and I took her in the house and put two towel on her and held her in my arms for a long time until I thought she was warm and okay to go to sleep. So I put her back in her kennel (clean) and give her a kiss on the head and go upstairs. The next day I wasn’t up yet and my mom just took her to the vet because she didin’t know they would keep her and well that was the last time I saw her. A few days later they kept calling and saying she was resting and took a few sips of water and that was it. She didn’t eat for days because they lose their appetite. Well, the next day they called and said she probably wouldn’t make it she was now puking up blood. I cryed that WHOLE night and prayed to god to let her live. Well in the morning they called and said she died at 8:00 last night. I locked myself in the bathroom and cried I felt so guilty. I felt like she thought we didn’t care about her and just left her there. I felt horrible. I think about her all the time. She is even my default pic on myspace. I think about her when I go to sleep and during the day when I see her picture on my wall. I feel like she was cheated out of life I guess. I know everything has a purpose but I always quetion why she was taken so soon. I wrote all of this to let you know how much I went through. That day my mom called back and asked when we could go pick up her body so we could bring her home and at least bury her in our back yard where she belongs with us. They said whenever as long as we pay an extra $50. My mom didn’t have an extra 50 bucks. We paid A LOT OF MONEY just to get her some help and to be at the hospital to get better. My mom told me we couldn’t bring her home. The other choices were to let them use her body for testing I said Noo! Then she said she could be creamated with some other puppeis that died and I still felt horrible. I just sat there and said that’s not fair! Why can’t I just have my dog! It’s not like she’s any use to us anymore anyway! That’s so cruel, why can’t we just have her back? I didn’t understand. I just cried and sad I guess we’ll have to let them keep her and have her be creamated. I was so sad, all I could do was cry. My question is: Why would we have to pay another 50 bucks just to get our dogs dead body back!? That is so cruel and I think they were just being greedy. How could they do something like that? What do you think? Do you think they were kust being greedy with money or what? Thanks for your time. I know I wrote a lot but I’m sure there are other peoiple that write a lot. Thanks again. <3