Fear of the unknown is a very scary thing, remember this poor woman has no idea of what it will be like to give birth and seems to have gone into blind panic. You are a really lovely sil Page to be so supportive especially given your situation. I think maybe with some counselling she might overcome some of her fears. I had a gf who had 2 c/s just cause she didn't want to affect her sexuality and to her a vaginal delivery would do that, she also didn't bf for the same reason. i guess everyone has different opinions and makes decisions that others of us disagree with, but thats what makes the world interesting.