I can't add anything that hasn't already been said. I know how hard it is to lose a pet. It's been over 4 years since I had to put my sweet kitty to sleep, and sometimes I still want to cry about it. But I relish the time I had with her, and I know I did the right thing for her.

Stay with your puppy and love on her. That is the best thing you can do. My heart goes out to you.