And, Jane Young needs to share this info with the world, why??? To give comfort to the perp?? Like saying, yep, we're dumb....you got us....perfect murder. Congratulations.
Not entirely sure I understand the question, but on the off chance I do...
1. Like the LE officers working the case, she is a public employee. It's kind of difficult for the public to determine how well they are actually doing their jobs if they refuse to tell the public what they are actually doing and what progress has been made. The public has a right to know what went wrong, if anything, and what steps have been made to correct it.
2. It is potentially possible that someone in the public has the missing pieces to the puzzle, but that person does not and cannot know this because the police are not talking. Police silence and secrets have failed to solve this case, but where secrets fail communication might succeed.
3. Information releases spark public attention. As much as LE might desire it at this point, Celina is not served by silence.
On the flip side there is the extreme outside possibility that the release of additional information might hinder the investigation. However, the killer already knows exactly what happened, and where, and why, and likely assumes that the police know most of it as well. And in this case, it's not like the police have some kind of active investigation to screw up.
In my opinion it's time for them to stop playing games. If nothing else they are paid for answers. They might not be able to prove who did it, but they damn well aught to be able to tell what happened to this poor girl.