Murph, this will be a hard weekend, knowing what lies ahead. Remember, when the time comes for the last "good-bye", you will be doing your friend a huge favor by not letting the suffer g go on. Our furry friends only want a few things out of life, one of which is a loving, caring family, and a peaceful end. You will have fulfilled your duty as her master by giving her the latter. Let tears flow, if they must, because many times, our dogs are better friends than our best human friends are.
I know this because I have walked in your shoes.
God speed, Annie, and to you and your family, and all who love her.