Just one data point here. I was charging very late at night at the Auburn Mall supercharger off the Mass Pike. This is a pretty desolate area at night after the mall closes. The SC stalls are off the main road, and it's pretty dark. I'm obviously male, and not small in stature either. But this one night, I was the only car charging, and literally no other car or life in sight. Then a small SUV pulls up and parks right in front of my car. Two adults males are inside, just looking at the SC stalls and my car. I felt very unsafe at that moment. Even if I could do an emergency unplug from inside the car, their car was blocking my way (mosty, I could have gotten around them, but that's assuming they didn't move at all). Anyway, they just sat there for what seemed like two minutes (was probably more like one minute plus).. and eventually moved on. Were they just curious local folks, or two locals looking to rob me? Surely they assume I'll have a wallet and cell phone at a minimum. I also had two computers and other luggage in the car. It could have been a pretty good score for them. And with two of them and one of me, my only real option at that point would have been to run if they approached me, but I don't think I would have gotten very far.
If I were a female, alone, in that situation -- needing to charge there to get to my destination -- I would have been extremely scared of being blocked in and not being able to just lock the doors and drive away, even if it meant hitting their car and causing damage to get away.
I think it's a very valid concern for anyone (male or female) charging at a SC location late at night, alone in some of these SC locations that don't have any refuge in case of emergencies.