Christine Lockheart is now eligible for parole after spending more than half her life in an Iowa prison for first-degree murder.

She was 17 in 1985 when she and her 24-year-old boyfriend, Rick Dwayne Nebinger, were accused of fatally stabbing Floyd Brown in his Davenport home.

Lockheart, now 46, was convicted as a juvenile and sentenced to life in prison without parole. That was until a 2010 U.S. Supreme Court decision that life without parole for juveniles is unconstitutional.

Several such cases are being kicked back to Scott County for resentencing hearings. Lockheart's was Thursday.

"Under the facts of the case and laws established under the U.S. Supreme Court, her sentence is life with parole," Scott County Attorney Mike Walton said.

Walton added that revisiting the case has been difficult on Brown's family.

Brown was a 79-year-old retired city bus driver and a Lockheart family friend whom she called "grandpa." She also had worked as a housekeeper for Brown.

Nebinger drove her to Brown's home on Feb. 17, 1985, where Nebinger then robbed, bound and fatally stabbed Brown while Lockheart stayed in the car. The victim was stabbed 13 times and left on his bed with a knife sticking from his neck.

Lockheart admitted guilt and apologized for the crime.

Nebinger, also sentenced to life in prison without parole, unsuccessfully appealed his conviction and tried to claim Lockheart was the one who stabbed Brown. Nebinger died of cancer in 2012 at age 51.

Lockheart is serving her sentence at the women's prison in Mitchellville.

Walton said Lockheart's case is the first of several coming back to Scott County to be resentenced following the U.S. Supreme Court ruling.

The next resentencing hearing is set for April 15 for Romeo Hardin, who was 15 at the time of the fatal shooting of Augustus "Gus" Nance in Davenport on Aug. 22, 1996. He was 16 when a jury convicted him of first-degree murder in Nance's death.