Who knows? That's marked by affect, not words. I don't think being shunned will help her take that step.
'Who knows' is a question we could probably debate forever. I will just give you my take on knowledge. I am compelled to know by my inner sense of certainty that we are all the same and that if I know me I know everybody. This requires balance against the fact that I am also aware that I don't know anything having long ago lost my battle to prove in absulutes that everything I believed in was true. So what I am instead is unafraid to express what I believe I see as opinion and to believe also that I tend to assess things without deep sacred cow bias, that having died to my own personal beliefs and swum ashore after a shipwreck, that what is left is solid and can't be taken.
The primitive brain does not distinguish between emotional threats and physical ones. Anger is among the affects commonly experienced in the amygdala-mediated stress response.
In particular, an unexpected challenge is a lot more likely to result in such a response. There hasn't been adequate fear conditioning to anticipate response to such a situation limiting capacity to suppress the response in favor of cortical reasoning.
I am not arguing against this. We are biological creatures running wet ware software. Our behaviors are genetically programmed in ways we can't escape. We are what we are. The question I have for you is 'How did emotional threats come to be able to trigger physical responses?' What emotional reaction can we have that triggers the threat response? I believe from my understanding of myself that the thing we most fear is loss of ego defense, direct experience of what we are most afraid to feel it is there to protect us from feeling, had to protect us from least we have died physically as children, the surrender we all had to make to conform in order to be loved, nurtured, and supported. I was taught this by somebody who went deeper in the destruction of his own sacred cows than I and plucked that self hate out at the root. But owing to what I personally experienced I believe this is the truth.
I think the words ego injury and narcissistic injury likely apply.
What evidence is there that this woman is a narcissist? Do you think he who shall not be named would give up the puppy and apologize?
That doesn't make her not a narcissist either. Maybe she has a pattern of rage, racism, empathic deficit, etc. I don't know anything more than this thread. Does anyone else?
Again the same question, 'Does anybody know?' I've said what I believe and believe what I've said, that for having her ego exceptionalism challenged her self worth was questioned and she responded with an intention to hurt and to the extent she created a real threat to the life of another person. I believe this because that woman is me. I have been on both sides, the attacker and the one attacked.