It's odd how people keep making the same mistakes over and over, like they never read the news about people making the SAME MISTAKES over and over:
* Stay together.
* Don't look for campsites on the edges of cliffs and canyons.
* If you can't see where your feet are going, don't go there.
* Know or research the area you're hiking in. The pioneers found the Columbia River was one of the most difficult to access water from the south (OR) side because of the sheer drops for miles.
* Don't wander around without some gear on your person.
* Wear, or at least carry, appropriate clothing. AND some granola bars (etc) so you won't be tempted to eat possibly toxic plants and bugs.
Shorts and a tank top... did she trip over her flip flops and fall off the cliff? Another article indicated she had left her cellphone with her other gear.
Sue