There is such silence regarding Esther at the moment .. a deafening silence. I think there is a possibility that the police are on to something which is preventing them from giving anything away.
IMO, this is the most plausible reason for media silence.
MSM reported the hiker ED met who drove her to her camper had come forward. To my knowledge, nothing has been divulged about information potentially provided from an interview with him.
Also, we've heard nothing about the meeting between French and Spanish authorities, presumably now held.
(Source - The Chronicle. Dec. 16: French police captain Jean Marc Bordinaro confirmed: “French officers probing Esther disappearance will meet with detectives from Huesca in Spain later this week."
The above statement was published two weeks ago, yet nothing about the proposed meeting has been reported, to my knowledge.)
IMO, withholding information from the media can be imperative to ensure the integrity of a developing police investigation.