With North Korea 's leaders out of public view , sister 's profile increases . A think - tank run by defectors says she will be temporarily leading the country . Kim Il Jong is in her twenties ; she attended private school in Seoul .
With North Korea 's leader out of public eye , sister 's profile increases . A think-tank run by defectors says she may be temporarily leading the government . Kim Yo Jong is in her twenties ; she attended private school in Switzerland .