Huh?
At any rate, Log, I think one big difference is that in suicide you are actively taking your own life, whereas in this situation you are letting nature take its course
I know in my neighbor's situation, her doctors could not predict how the pregnancy would effect her cancer. I think there was some thought that perhaps it would spread more slowly due to increases in some parts of the immune system - - of course, that was over 10 years ago too, and I suppose more is known now than was known then.