RitaB- I kind of know how you feel. My husband has small cell lung cancer. He was diagnosed in December 2003. At that time, we were told "with treatmen" he woudl be lucky if he lived6-9 months. He took treatment until March, which is when he decided the treatmnet made him feel worse than teh cancer, so he stopped taking it. Since then, he has felt great! He plays golf, goes fishing, walks, rides his bike. He does everything that he did before cancer. Liek you, we are thinking, how can a person feel so wonderful, when doctors say they will die so soon. My thought on this is, God is watching over him. If God was ready to take him, he would. And, if God is not ready for him, can cer can NOT kill him. I am by no means saying God gave him the cancer, but he certainly can take it away. I don't think there is any medical explanation. Like my husband, I am glad your sister has chose to take advantage of her quality of life. Rather she dies 6 months from now or 60 years, is up to God ultimately. Also like my husbandm she sounds very strong and determine to win, and that is more important than anything.
The only think I know about teh difference between small cell and non small cell lung cancer is that, small cell responds better to chemo. But like non small cell, neither are cured by treatment.
I wish you, your sister and your family the of luck!