(Let's just say I have intimate knowledge of what they are going through.)
As you allude to, I've also experienced something like this & lost someone close. I know how heart-wrenching it can be, and how debilitating it is to just stand by and watch.
The very best to you & more power to the two of them!
But now that she won against cancer, she won't have to deal with it anymore. That was on the fine print, after all. Congratulations !
Even though I don't know Randall (and Mrs. M), I somehow feel warmth for for them to have triumphed over it. Maybe it was the open way he disclosed it to the world right at the beginning.
Hmm, I'm not expressing myself well here. Dammit, Low EQ.
Anyway... "F&ck Cancer".