I'm sorry to hear about Murphy. Old age is definetly a hard thing to deal with for not only animals, but humans as well. I have 4 dogs and 1 cat now after loosing Boots. My white shepard (Tara) is blind in one eye and progressing in the other. My black lab (Beethoven) and bernard mix has hip displacia and a brain tumor. My two other dogs are fine for right now. Tara and Beethoven are too old for us to do anything else. Beethoven has already out lived his age for his breed. Tara is going blind because of a very rare disease the occur in German Shepards. She has had the disease in her eyes since she was a puppie and the disease doesn't make itself known until it's too late. Other than that, she's doing considerably well. But like I said, it's rough watching them go through it. It sounds like Murphy is a trooper though. Just like my pets. She is well loved and taken care of, thats all she wants right now. Your doing everything you can and she knows it. I will keep you both in my prayers.