People who do volunteer humanitarian work, and people who travel on a shoestring, and we might throw in people who travel to small villages in many agrarian or herder countries where building codes are nothing like what they are in downtown Western cities (though Pokhara probably isn't all quite there - maybe some of it is, I'm not sure) all quite often end up sleeping on someone's couch or staying in someone's attic and generally having very weak security. I've done it a fair number of times.
I've had a camera taken and groaned about it, but I could have had my throat slit in my sleep. I've been in converted rooms where anyone could have pretty well shouldered through the flimsy walls/door, and I didn't see another hotel of any sort in that village on the road into Tibet. I've also been taken in by gaggles of Turks and Germans who were friendly as anything but I didn't know them until that day, and oh, you never think to ask whether they have exactly enough beds (never mind separate rooms) while you're talking about who are you and what exactly are you saying you'll show me and do you live exactly along the route I'm taking anyway... I've slept in trains and minibuses in Eastern Europe and Mongolia on freezing nights, packed in with six to eight others at least in a tiny space where every time you move your legs, someone else seems to get offended but at least you're keeping each other a tad warmer - how secure is that. And no one at the station bothers to ask in English, how many people do you think are going to be in that carriage btw. Or there simply is no other bus going up across the country to where you're going.
For some people, this is nuts. For some people, this is seeing the world and having real and raw relationships with the rest of it (I do plenty of staying in my room with my games these days, where I can afford to and I've already seen many of the sights and btw it's humid as anything here in August, and both locals and other foreigners pick on me constantly not that I mind, but it shows the expectations). For some people, it's the only way to get from A to B without going broke. Many, many people from poorer countries and even sections of society in Western countries very often end up traveling around sharing rooms with lots of people they don't know to be able to get into new places, for days or even months. In fact, there are whole squads of foreigners packed into small rooms in many American cities. I doubt they all know each other all that well, but that is how it is done all over when people are committed to get on with things.
Sure, though she could have tried to cover more bases. She probably should have tried to let someone familiar know where she was. I don't know what her thinking was exactly about that... Some of us don't like to always feel leashed to a base, though. Even some women. Go figure.