According to the article, the warrant says kidnapping, a crime for which there is no statute of limitations. However, the district attorney for the case would have to show probable cause to enforce the arrest warrant. There's little chance of establishing that absent rediscovery of evidence or the existence of new witnesses from a crime that occurred nearly 70 years ago. There's also the issue of their being only one living witness relevant to the ordeal. And she is unlikely to say anything even if she were to possess a steel trap of a memory.
