From the start, Robyn had her slightly younger age work in her favor. The edge she had was her uterus, and that's what she uses to keep Grody in line.
I don't doubt J and C got points for their spirit babies, but it appalls me that this is how these women measure their self worth. And that it's used by the women to barter, cajole, and manipulate. To hurt each other.
From watching the show, I see Robyn doing that more than the others. She uses the youngest children like she's holding them for ransom. Excrable. I wonder if the kids miss Mindy the Au Pair.