Maybe I read it wrong, but it sounded to me like he wanted all three babies, and tried to get his girlfriend to consider having all of them.
Once someone has agreed to the murder of his child, his presence at the slaughter is irrelevant.
What could he do about it? Honestly - what? It's not that I don't find flaw with him in some ways, but how could he stop her from doing this?
He replied, ''What we're going to do.'' He respected what I was going through, but at a certain point, he felt that this was a decision we were making. I agreed.
He may have been reluctant at first but eventually he agreed (even if it was grudgingly).
When it is a matter of life and death, to sit idly by is an agreement. When someone does not do everything in one's power to halt a murder, their inaction is a act of consent. IMHO
Having been in a similar situation years ago I agree. He as the father has no say in the situation.