This Woman Was 18 When She Acted as Lookout for a Fatal Robbery. But Was She Just a Kid?

Marsha Levick, chief counsel of the Juvenile Law Center, which filed an amicus brief in support of Lee's case, said she and others will continue to litigate the issue.

"The judges recognize that there is an arbitrariness to the decision that the Supreme Court issued," she said. "Whether this will be the case that allows us to get past that arbitrariness, it's hard to know."