She was one of the witnesses of the 1979 assassination of South Korean president Park Chung Hee.

In 1976, Sim applied to Sookmyung Women's University as a composition major but was rejected.

She was one of the witnesses of the 1979 assassination of South Korean president Park Chung Hee.

When she sang a song by Misora Hibari ("Kanashii Sake"), President Park yelled angrily, "Who brought a Japanese girl?

[5] In 2012 Sim admitted that, after the assassination, she had been incarcerated in a prison and then held in a mental institution for nearly a month, before she was released.