I think you meant "bowel cancer", right? You might want to edit your title and delete this comment.
doesn't it seem like, often times, it's the people who AREN'T ill that have problems laughing and joking and the ones that actually are suffering are the ones with the best sense of humor about it :)
My sympathy for your friend. I lost my wife seven years ago to cancer. She was a very brave and possitive lady who also helped others to accept her by joking about the sickness. Yet it is no joke. At the end she died.
You can read her story at http://tinyurl.com/d6bscj In the long run, I blame myself for her death because we trusted the medical system and failed to investigate the alternative medicine route. Chemo is only showing a success rate of some 3% whilst alternative medicine is showing up to 90% success rates.
Tell your friend that life is precious. Her kids are precious and they need her alive. Trust me, the damage that was done to my kids through the death of their mother , can never be reversed. A mother can never be replaced, especially to younger children.
The medical system is designed purely with profit in mind, not to make you better! Tell her to act and research. Research will cost her nothing, but could save her life.