A bit more detail here:

http://www.nytimes.com/aponline/2009/08/07/us/AP-US-Death-Valley-Fatality.html

Sounds like she was reported missing after failing to report to work (she's a nurse at a Las Vegas hospital).



http://www.breitbart.com/article.php?id=D99UAGC01&show_article=1

He said searchers mistakenly looked late Wednesday for Sanchez in campgrounds in the Panamint Mountains, based on family members' reports that she planned to camp in free sites and visit the Scotty's Castle attraction in the far northeast corner of the vast national park.