I think you know that the time has come to put an end to her suffering. That's why you posted the question. Please ignore the folks with stupid comments like "its only a dog". Dog lovers here and all over share your pain and understand how hard it is to say goodbye.
One vet who helped me release one of my dear ones, said to me "PLEASE REMEMBER WHAT A GREAT LIFE YOUR PET HAD WITH YOU - HOW HAPPY AND HEALTHY SHE WAS AND LUCKY TO HAVE LIVED SUCH A LONG LIFE WITH YOU. YOU MADE IT HAPPEN.
My thoughts are with you at this difficult time and I know you will make the right decision for your pet.
