The sad thing is the fact that nobody helped this poor lady at all. That's the world that we unfortunately live in..alot people out for themselves or too scared to get involved when others are in need.
I would'nt say ALL women are easy targets but by stature they are certainly less formidable targets. Most of it is the way a person carries himself/herself or just looking like they are unaware of the surroundings.
I am constantly amazed how task focesed, distracted, or just plain oblivious most people are. If someone has you in a chokehold with a sharp object in your back before you notice anything wrong, you have failed Situational Awareness 101.