The Winter Olympics of 2018 were Kim Yo Jong‘s international coming out party. The world’s press gushed about the younger sister of North Korean Supreme Leader Kim Jong Un. The debutante—slender, smiling, gracious—seemed to be so very different from her porcine brother. But now that his health is in question, and amid conflicting reports that he could be at death’s door, his little sister may well be first in line to carry on the family dynasty.

Sister and brother have been close for years. She has advised on key events in the North Korean capital of Pyongyang, encouraging construction of modern apartments, ski slopes, even an amusement park, but it was during those Olympics that she shone as a major figure before the world. It was then, at a luncheon meeting in the Blue House, the center of power in South Korea, that she gracefully handed the South’s President Moon Jae-in a handwritten note from her brother suggesting they get together for a summit.

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As a Blue House spokesman described the encounter, Kim Yo Jong embellished the written verbiage with polite words of her own. Big brother hoped they could get together sooner rather than later, at the “earliest convenience,” she said. Moon, who had been looking for reconciliation with the North, was thrilled. “Let’s create the environment for that to happen,” was his all-too-eager response.

Read more: The Daily Beast