The question the reporter asked was all about these details, but what the officer said, dismissing the question, was that family hadn't recently heard from the two.I’m trying to recall a case where teens were missing on a road trip and no-one who knew them or had met them expressed concern for their whereabouts or wellbeing (especially with a crazed killer/s on the loose in the vicinity they were last seen).
And where no information was given about dates they left home/were expected back, etc.
It's up to the family whether they want to share that info, and their thoughts and feelings, with the media. The police cannot share personal, private, stuff, they can only state the essential descriptions, and the facts about why they are concerned enough to ask the public for help finding them.