“adding that she didn’t know why the final identification took so long.”
Because they are not in any hurry to do so, and will be scooping up the property of the deceased rather than transferring it to the families.
If they don’t bother identifying people, they don’t have to find the relatives and thus can claim “abandoned property “.
Why it took so long is because quick DNA results are a thing of TV crime shows. A show showing them investigating other crimes while waiting weeks for DNA results would be pretty boring.