Lim ended up staying in North Korea for six weeks, delighting the country's propagandists with her steady stream of criticism of the South's government. They even dubbed her the Flower of Reunification, since everyone, including the glorious leader, shared her dream of harmony between North and South (as long as he got to enforce that harmony with tanks, of course).
So What Went Wrong?
But then North Koreans began to notice something odd about this girl: The South, they'd always been told, was rife with starvation, poverty, and ignorance. Lim Su-kyung, however, was clearly well-fed, well-dressed, educated, and unusually still alive for a "political dissident."
"The headband is to cover torture wounds, right?"
Lim blew everyone's minds by (*gasp*) speaking naturally while casually referring to South Korea's rapidly increasing wealth and abundance of food, electronics, and cars that anyone could freely buy. This intrigued North Koreans, who thought that such luxuries were gifted only at the government's leisure (and mostly to government itself).
When Lim Su-kyung returned to South Korea, she was immediately arrested for crossing the demilitarized zone. North Koreans were devastated, since they naturally assumed she'd be flayed alive while her whole family got shipped to prison camps. The North Korean propaganda teams sent to chronicle her martyrdom, however, beamed back truly shocking images: Lim receiving a public trial, being represented by a lawyer, and receiving a light sentence (which would be even further reduced). Her family members, rather than being sent to gulags, gave interviews from their own homes.
The Korea Herald
Even her prison jumpsuit was fancier than whatever Kim Jong Un's wearing.