It's too late, by the time Ira sees. Cora doesn't have to look. She can see it, because Ira can see it. It blossoms in front of her, and immediately her eyes well. Ira could see what Cora saw, too. And at that, Cora pulls her hand away from Ira.
The infinite layers of everything immediately are gone, and Cora feels motion-sick. Like they were just thrust here from another place entirely. But they haven't left. The potatoes are there. The murmur of Drew and Fletcher's voices uninterrupted. The soft clink of coins, the snatches of laughter from upstairs.
"Has... that ever happened to you before?" Her hands are trembling ferociously, and she busies them with peeling potatoes.