There is already a thread about this event.

However:

She exceeded her capabilities, she should not have been out there alone (and her friends should not have allowed her to be alone knowing her limitations)

She did not stay oriented to the trail when she left it. You need to take bearings, look for landmarks, leave a mark to guide you back, know the terrain around you, something that will tell you which direction the trail was.

She moved too far from the trail when she realized she was lost (conjecture), and anxiety would play a role in that. Many people do the same thing when disoriented, going too far in the wrong direction either before they realize they are going in the wrong direction or after.

She did not signal properly enough to be found by teams that did search in that area.

She evidently did not posses sufficient wilderness survival skills ( fire, signaling, navigation, experience, planning, judgement, reliable friends)

As stated in the other thread, this is not to insult the lady, just analysis of the facts. She was out of her depth, her friends did not help take care of her.