My heart goes out to you. My Mom has lung cancer (NOT a smoker, never touched a cigarette in her life) The sad thing is that when you tell people that she has lung cancer they assume that she 'brought it on herself' which makes me VERY angry so I begin every explanation with 'she never smoked' which makes smokers angry, so you can't win! Now, that you have heard me vent....
CANCER IS HELL - it's hell on earth for the person fighting it and the loved ones who have to stand by helpless, at the mercy of doctors, who I personally have grown to realize KNOW about as much as I do about treatment. I suggested a drug to Mom's oncologist that I had read about being given to elderly patients and 'low and behold' at the very next visit he has ordered that very chemo treatment to give her! I feel like I am the doctor.
Sorry, back to YOU. You are not alone, there are thousands, millions of people around the world watching loved ones die of this horrible disease. If you are a person of faith then it may help to pray and ask for God's help, even if you are not, it may help. I am by no means the PERFECT Christian. I was so angry at God when Mom was diagnosed. Did you not feel that she was so good - and wonder why GOD would strike such a wonderful person as your Mother down with such a horrific way to suffer? If you did not, then you are super human. I don't see how you are doing what you are doing - God surely will bless you in some kind of special way for being the saint you are! I don't know how you are holding it together. We all feel this way sometimes. I am lucky, I get a break from it and my brothers and sisters step in and do their part, still I can see it taking it's toll on all of us.
I can only say that we have to form a circle of prayer and hope to try to get through it. Find a friend to talk to, ask the doctors if there are resources that can help you with your Mom. Let someone know how you are feeling and what you are going through. YOU NEED TO TALK about it, even to a stranger like me.
I know this doesn't help much, but just rememember that the Bible tells us "Cast they burdon upon the Lord, and He shall sustain thee. He shall never suffer the righteous to be moved."
Psalms 55:22
may God bless and keep you and your Mother in the palm of his hand - after all, his eye is on the sparrow, you KNOW he's watching YOU.
I am Jenny's MOM