Rye, as I understand it, excommunication is primarily intended to be medicinal, in the sense that it is to draw the actor’s attention to the fact that the actions taken are spiritually dangerous/deadly, and cause the actor to examine his actions in light of the very severe consequence of being out of communion with Christ’s church. I think in some respects it is also to educate and protect the faithful.
That being said, I think everybody “gets” that raping your step-child is wrong, so in that sense, there is no need for a public proclamation. I am sufficiently unsure of canon law as to whether there is even a provision in canon law for excommunication for typical mortal sins, but I think the point is that all the faithful understand that rape, murder of an adult, etc., are mortal sins.
However, as is amply demonstrated on this board, in the Church, and in society, it is apparently not clear to some that directly intended procured abortion is evil, and that is why it is an excommunicatable, if that is a word, offense.
As to the facts, I agree that there is very little verifable information about the Brazilian girl’s actual condition, but I recall she was at least four months along, so she was presumably approaching the point where the babies were able to survive, with intensive intervention, outside the womb. I do not think anyone is suggesting anything other than that the babies be carried as long as possible, so as to give them at least a chance, given that the girl was in stable condition and apparently receiving care.
BTW, if mom, doctors, and even step-father repent, they will all be equally welcome back in the Church. Number two, perhaps the Church would wait for the criminal system to make a determination as to step-dad’s guilt, as I think he is at this point accused but not convicted, assuming there a provision for excommunication under those circumstances. Number three, from a practical standpoint, I think the Church could have perhaps made some mention of the step-father, excommunication, and why it was not (AFAIK) applied to step-dad, seeing how it was absolutely foreseeable that the Church would get creamed like it typically does in the secular media.