I'm so sorry that you are going through this. I totally know what you are going through though. I had to have my male orange tabby cat put down almost two years ago. We could have had surgery done on him and the amount of money that it would have cost was just phenomenal, and there was no guarantee that he would have survived the surgery. We made the decision to have him put down. Was it hard, yes it was. Do I regret it, no. I know I did the best thing for my cat. He is no longer suffering and is resting in peace. I think that if you decide to get the poor dog put to sleep that you are helping her in ways that she cannot tell you. Allow her to be at peace Shellie. I truly am sorry.