The genteel American with an abrasive mother, lol. Mostly I forget that Cora wasn’t born English. The aristocracy suits her.
She’s kind and easygoing. She does like to work, to get involved, and she’s good at it. Her role on the hospital board is a bone of contention in the family, but she’s insistent in a very mild way. Peace is important to her.
I want to say Nine, but that’s not possible. Robert is a Nine. Numbers don’t marry each other; it’s too much like marrying yourself. Also, Cora isn’t a Body Type. She doesn’t engage in the world physically. If anything, she’s social, although I can’t think of her showing envy.
She’s a Seven. It’s that calm effectualness. She has zero interest in drama. When trouble strikes, though — think of Mary and the Turkish diplomat — she gets the job done. (It’s possible that’s why she and O’Brien are a pair. They understand each other without trying.) Cora will go along, content to stay in the background, and then become super competent when the need arises. That’s quite Seven.