Ok. The other thing my friend did a lot (I'd say she's quite a dramatic personality, for good or bad, anyway), was get into moods and strops with people, without ever saying what it was about. To her, there was always some obvious reason and they had clearly wronged her. To them, and everyone lese around, it was an utter mystery and just 'so and so being her attention-seeking, drama llama self again'.
In most instances that I knew about, if she'd bothered talking to the person, that is asking questions and listening to the answers, she'd have discovered that the background to what had happened wasn't what she assumed it to be at all. There was either a good reason (that she didn't know about) for what they'd done, or they'd just been casually thoughtless, no malice intended and would probably have apologised and moved on, had it been brought to their attention.
She never sought to discuss, understand or resolve anything. Never asked questions in an effort to understand what had happened. Was largely incapable of calm, reasonable discussion on any topic that involved strong feelings (though actually well-informed and interesting on all sorts of topics). My view of that was that she couldn't bear to open herself up to the possibility of being disagreed with, of not being seen to be right. (The result being of course, that nobody thought she was right, or took her seriously, about anything, ever. She was like the boy who cried wolf).Though actually, now, I suspect she just felt a thing, took that as a fact, so in her head she was right. Other people's evidence, lives, experience and feelings were irrelevant. An incredibly arrogant point of view (in normal social terms).
Whenever someone else said something, casually in conversation, that disagreed with her very fixed view of the world, she looked so shocked. It just didn't seem to occur to her that there were different points of view, or different subjective experiences of the same thing.
My view, which might seem contrary, was that she needed to learn assertiveness. That is, how to express herself clearly and calmly, listen to a response, conclude the interaction politely and productively. She just went form 0-60, disinterested to full on tantrum, with nothing in between.
Anyway, that's a lot about one person, who will be different from you. It does offer one outsider's perspective on that person's behaviour, if of any use.