North Korea observers fear she may have fallen into her husband/dictator's bad books and or maybe incurred the wrath of his equally menacing sister, Kim Yo Jong.
Experts believe Yo Jong is the power behind the throne and is even more deadly than her brother. One North Korea watcher told Yonhap News Agency:
“Ri showed up at public events every two months last year but has not appeared in public for over seven months this year. “That’s quite extraordinary.“Some sources speculate Ri’s disappearance may be linked to a check on her activities by Kim’s younger sister Kim Yo Jong."