First, my condolences to the OP. I'm so sorry for your loss.
Personally, I have very little concern about contracting cancer. I'm a 56 year old in great health. I exercise, eat correctly, avoid processed foods, gluten, GMOs, soy, white starches, and sugars. I consume tons of green and orange vegetables, flax, chia, and moderate amounts of olive and coconut oils. I take a high end, organic, raw, whole food vitamin, plus 12 raw bitter apricot kernels each day. The apricot kernels provide approximately 120 mg. of laetrile (vitamin B-17), which is the recommended dose for cancer prevention.
I do not trust the medical profession, when it comes to traditional cancer "treatments". Sadly, obscene profits are made in mostly ineffective cancer treatments, not in curing or preventing it. I've always wondered how many cancer deaths can be attributed to the treatment (i.e. chemo), and not the cancer itself. My personal belief is that cancer is a deficiency disease, due to the lack of laetrile in our modern diets.
I know that many of you will label me as a nut case, but those with an open mind should read "A World Without Cancer" by G. Edward Griffin.