I fully agree with the need for to identify the stakeholders. I presume that in the second group of stakeholders you included the father as well. 

Stakeholders' rights, absolute or not, is an interesting point/question. And I think this is where it becomes tricky. Is right to life an absolute right? And, even if it is, can it be always guaranteed? After all we all die. But. of course, dying and being forced to die, are very different things. Is there a difference between an inconvenienced life and a taken life? 

The issue of viability is also complicated. Viability by legal or biological standards? The fetus is perfectly viable within the womb, and except for a tragic event, it is bound to live, on average, for 70-80 years. I just read an article today, about "great strides" being made to create an artificial womb for animal reproduction. Scary stuff, but it forces us to think outside the box, especially ion terms of viability. 

Interesting stuff.