What “family” is left that is presumably still “seeking closure”?
But the "family" apparently didn't file a missing person report.
53 years later probably all uncles, aunts are either senile or dead. Maybe some cousins around. Now that they have the DNA, maybe they can find some living relatives, but still doubt full about any “closure”.
Back in the mid-’70s, I spoke to an 90 year-old man who lived and had grown up in rural west Virginia. I asked him what the greatest change was he had witnessed in is lifetime. He told me that back when he was young, the police never investigated anything, while now, even if a stranger is found dead in a field, they will work on the case until they know who it was and what happened to him. Back in his day, they would just bury the body as best they could and move on. As an example, he told me that there was an Italian shop-keeper in his town who gave credit, but if someone fell too far behind, they would just disappear: no body, no evidence, no clues. Everyone knew what was going on, but no one, except the relatives, ever seemed to care.