I'm so terribly sorry for such a tragic accident...a really freak accident. It was not your fault. You can't keep a dog in a protective bubble. If you had her on a leash, she wouldn't have experienced the sheer joy she did on those walks where she could run and explore better than on a leash. She did what she was bred to do and loved every minute of it. Her sweet life was cut short, but I think she lived it to the fullest with an owner who gave her a terrific life. There's really nothing I can say to help. I do know that only time and memories will lighten the load and take the edge off. There's no rushing it, that's for sure. My heart goes out to you at this very difficult and painful time. (((hugs)))