I mean, what would you suggest be done at this point? She's disappeared without a trace.
I think the reason Libby Squire is such a national news story is that:
a) It's all very lurid; potential murder and rape, screams in the night, etc. It's something the media can sell.
b) There is plenty of CCTV, potential clues, witnesses and progress with an arrest. There's been new stuff to talk about.
Compare that to Leah: One solid CCTV image from the day, no witnesses, no clues, no suspects. Nothing to write about.