Her group, Koyote, appeared on the September 3 broadcast of 'Human Documentary: People Are Good' where it was revealed that she used to tremble a lot on stage. Footage of her in 2008 was revealed in which Shinji was seen to be shaking immensely on stage while holding a microphone.
Shinji stated that she fainted after exiting the stage and that she "became a singer because I liked singing, but I hated myself for becoming like that." She was unable to go on stage for a while and became incredibly depressed.
Fellow member Kim Jong Hyun stated that it was hard because all they could do was comfort her with words. We're glad she made it through and is performing on stage today!