The title literally tells us the reason he “crashed out” dummy: he was rejected. We don’t need your primary school analysis on common sense.
What’s not clicking for you is you think your analysis is deep. You basically said “she probably offended him” and thought you were Einstein with the gems.
If he decided to stab both her and her sister after rejection, of course they offended him. How they did it is besides the point. He was so offended and embarrassed that he chose to kill her. You’re not deep by hypothesizing how the scenario unfolded. You’re just fishing for rationalization even though *we know* he got offended and chose violence.
“she probably rejected him *in this specific way* which is why he reacted the way he did”
Uh….okay. That means nothing to the situation at hand lmao. Unless you think he was justified? If you don’t think it is justified, what is your point? We all know he was hurt and reacted as such. So now what?