Oh Debi, I'm so sorry for your loss... it is hard when a beloved companion animal gets so ill you have to make the life or death decision. Do you know that animals are less traumatized by death than humans are... they are more matter of fact about it. I'm glad that we are allowed a way to spare them ongoing pain and suffering. It is a selfless and generous thing to let them go. The first month or so is awful... always listening for their tags jingling, looking for them when you get home, filling the water dish automatically... 15 years... that's a very long time. Did you get her when she was a pup?