The search for Greatnan is in quite a few safe hands, and local walkers, cyclists, tourists are being alerted. There are refuges on many of the mountains - they look like wooden huts and have a few useful items and somewhere to rest if walkers get lost and are exposed to the elements. Her maps show where they are, or she could shelter in her car.
If you can physically distance yourself from the computer for an hour or so, it might help. Not that I feel like taking this advice myself! I've promised myself a long walk with the dog, next time I hear some news.