Maybe you need to think through this a bit more to determine how you feel toward her.
First, she did not do it. A doctor did it.
Second, she did not make the decision without advice. The many members of the medical community are notorious for pressuring parents into going along with RIC. As a whole, the medical community is, at best, passive agressively pro RIC.
When we had my first son, we told the doctor several times we did not want to RIC. I thought the matter was settled. Then at the birth, just after I had cut the umbilical cord, he baegan trying to convince me to do it anyway. Pacing back and forth, body language, tone of voice, practically pleading with me for the good of my child. It was very difficult to stick to my guns, and i am one independent son of a gun. I believe many would have given in. If my wife were alone, she definitley would have given in, as she was too out of it to think.
Third, she had other advice likely. And much of it could have been wrong, incomplete, and biased.
In my mind it is unfair to put all of this on her. Just as i do not put the burden on my parents for my being RIC. They were NOT given the informatioin to make an informed decision.
So my advice is that if you wish, you can continue your relationship. She could well be a victim rather than a perpetrator.