Making a scandal and avoiding unnecessary further hurting towards the guys little ego minimized the chances of him venturing further after it.
I don't think it necessarily works that way, even though i can understand why that would make sense. Generally, i'd agree that less force is probably safer, at least as much as possible, but also other things can be considered here. The guy in question is a bully, i would think that the person most likely to be followed by him is actually the one in complete silence. It would present him with the easiest
and most satisfying prey.
At least, i think what she did, which is essentially breaking the bully, is indeed a relatively safe thing to do, if you're capable of doing so and are facing one. She put him in his place, and i think cowards like him are more likely to pick on easy targets than ones who are willing and fierce to fight back.
Another thing to put in mind is that the guy's initial reaction after the first hit probably has something to do with what she decides to do afterwards, a factor i mean. His reactions stroke me as those of someone who was intending to appear oblivious (which is a very common reaction), as if he was a victim, and i think she probably saw that and was angered even further, and realized even more what kind of coward was in question there.
Note, i don't think it would always work that way either, and i might be off in my interpretation in some regards, but i'm just saying that i don't think what she did necessarily means she put herself in more risk, all things considered. I agree with your general approach proposed, and think she might have handled the situation differently, equally effectively and perhaps even more effectively, but i think what she did was fine too.
About justifiable, the space had already been achieved and after it was achieved she kept hitting. That part doesnt seem reasonable to me. No, not bad, I am pretty much careless about it but it was not "reasonable" . It didnt seem to come out of a place of reason but fear.
So given that I saw no reason for attack after her territory seemed secure and he was already showing his hands displaying submission and out of her space, I dont think it is "reasonable" nor particularly "right" .
Its gray enough to not be morally wrong IMHO, but definetely not "right" and for the circumstances, no "reason" to do it either. She did it because she was scared, and that was okay.
(The oxford says justify would mean to deem reasonable or right to do x)
I'd agree that it was most likely based in emotion, but with adding things like anger and general deep frustration with culture and it's consequences on the woman and others as has been pointed out.
In that sense there most definitely is a reason. Not in the sense of well calculated thoughts and decisions based on analysis or things along those lines. But in the sense of being understandable and appropriate.
What she did may have contained elements which were not particularly necessary, but that does not mean it had no reason nor that it was not right.