HONOLULU - Jaylin Kema, mother of "Peter Boy," died Wednesday night.

6-year-old "Peter Boy" Kema vanished in 1997, and has been a monumental case in Hawaii.

Husband Peter Kema Senior pleaded guilty to manslaughter in 2017. It took 20 years for Kema to admit to authorities that he tried to cover-up Peter Boy's death.

Jaylin also pleaded guilty to manslaughter in 2017 for her part in the boy's death. Part of Jaylin's plea deal called for testimony against her husband.