This is not new by any means.I hate to think the safest thing to do now days is simply drive by..
Criminals, and criminal females, have been using the "damsel in distress" technique for hundreds, if not thousands, of years. I'd be willing to bet the cost of this post that somewhere long ago there was a neanderthal that went to the aid of a female being "attacked" by a bear in a dark cave only to be clubbed senseless by her partners waiting inside in order to steal the neanderthal equivalent of a "rolex".
Do what you think is best, and keep your guard up among strangers imo, even the "pretty" ones...