Very sad to hear your aunt has cancer. I've unfortunately had a lot of experiance with cancer.
I have sadly lost almost my whole family to cancer. My dad, 3 aunts, 2 uncles, 1 cousin, and 1 great uncle. - All died within the last few years except my dad, who died when I was young. One of my aunts had lung cancer. She was a smoker for many years.
I have one uncle still living who had cancer, he is in remission, but as fate would have it he ended up with parkinson's disease. Another battle not so easily won.