WEST UNION, Iowa (AP) — The mother of one of two slain Iowa cousins has pleaded guilty to drug charges. The Waterloo-Cedar Falls Courier reports Misty Cook-Morrissey pleaded guilty Wednesday to two counts of delivery of methamphetamine in Fayette County District Court. She was sentenced to 10 years in prison. Authorities say she was arrested in November for selling drugs out of her West Union home.

Morrissey is the mother of Lyric Cook, who disappeared with her cousin, Elizabeth Collins, in Evansdale in July 2012. Their bodies were found in December 2012 in a rural wildlife refuge in Bremer County. No arrests have been made in their deaths.

Lyric Cook’s father, Daniel Morrissey, was sentenced in September up to 90 years in prison on drug charges.