Hi zerinus,
I can see your viewpoint, honestly I can
Catholics tend to believe though that if both mother and unborn are in trouble, we try and save both, and its up to God whether both live, both die, mother lives, or unborn lives.
We dont believe in aiming in on just the mother.
I hope that explains it more.
I know you would think its better to aim in on the mother to concentrate on her, and have more chance of saving her, but we think it is up to God when it is a case of a pregnant woman.
Aiming in on the mother alone is killing the unborn in our eyes.
Hope that helps