The most common adjective that I have seen in connection to this case is "naive."
When you hire someone for a job, you look at their employment history and references. If SS had arranged to meet up with people who had references, or stay in a place with references, she would have been much safer.
Why do women go solo to these non-Western countries? Because they LOVE the culture so much. What's the culture like? Women wear veils, travel with chaperones, and defer to their husband's judgment. So we have an intrinsic contradiction.
Why do they really go to these countries? They can't afford the Riviera or Cham.
Because they are bored of the superficial Riviera and Cham.? We are not talking about Arabia here...or Somalia...or...etc...I know women 75+ who go to places "off the beaten path" alone - safely and wonderfully. Usually the more sophisticated traveler will opt for something more interesting than the middle class destinations considered the norm - like the Rivieras of the world - places which by the way are crawling with all kinds of thievery and mafias and unsavory characters- one has way more chance of running into trouble.