If you have been involved with a Terminal cancer patient step on in...
Havnt had a close family member but, had a good friend die of cancer. Similar as far as in not goin to the doctor. He is gonna have to work through it himself. Not much you can do. At the end of the day it is her body and her choice. Kinda selfish I guess but, still up to her. I would say have him go see a shrink but, they will just put him on pills. Antidepressants and ****. Not a fan.
She may not have made it even if she had dome everything by the book. Rough situation. Wish I could be more help.