My dogs don't have cancer, but Miles is covered with lumps. For now they are "fatty cysts" but I always fear that something like your situation would happen to us. I'm so sorry to hear about all that you're going through. My dogs are my children and mean more to me than a lot of people do. You're an absolutely amazing person to sacrafice so much for little girl. You have stood by her, loyal and true- just as she has done for you all these years.
One of my favorite dog quotes:
Treat me kindly, my beloved master, for no heart in all the world is more grateful for kindness than the loving heart of me.
Do not break my spirit with a stick, for though I should lick your hand between the blows, your patience and understanding will more quickly teach me the things you would have me do.
Speak to me often, for your voice is the world's sweetest music, as you must know by the fierce wagging of my tail when your footsteps falls upon my waiting ear.
When it is cold and wet, please take me inside, for I am now a domesticated animal, no longer used to bitter elements. And I ask no greater glory than the privilege of sitting at your feet beside the hearth. Though had you no home, I would rather follow you through ice and snow than rest upon the softest pillow in the warmest home in all the land, for you are my god and I am your devoted worshiper.
Keep my pan filled with fresh water, for although I should not reproach you were it dry, I cannot tell you when I suffer thirst. Feed me clean food, that I may stay well, to romp and play and do your bidding, to walk by your side, and stand ready, willing and able to protect you with my life should your life be in danger.
And, beloved master, should the great Master see fit to deprive me of my health, do not turn me away from you. Rather hold me gently in your arms as skilled hands grant me the merciful boon of eternal rest–and I will leave you knowing with the last breath I drew, my fate was ever safest in your hands.
— By Beth Norman Harris
** You know, you might enjoy the book, "Chicken Soup: For the Dog Lovers Soul". It's been a really great read for me.
Hugs and prayers for you and your family, both two and four legs.