I think after the first day I would have traveled by night back the way I came, hoping to get back to the main road. Not sure how far that might have been, maybe dozens of miles or more.

What's the best thing to do if you find yourself in the same situation? Of course she should have been better-prepared, or shouldn't have been there in the first place, but given the case of water and some camping gear, what would you do in the same circumstances? Let's say she's 25 miles from a main road...can she hike out alive?