Perhaps you missed the part that said "Of all of the escalations that occurred, her's seems the most sensible". So, the fool who is not grasping that there were escalations on both sides is not me.
Also realize that everything you say this woman should have done equally applies to the aggressive thieves who engaged in criminal behavior. The baseline situation was that people were socializing in a bar. Then some patrons escalated the situation and eventually became threatening and stole from her. Apparently to them, part of enjoying the big wide world involved imposing their will on her and stealing her things. They did not seem to show much empathy. While your advice is not a bad stance to take, the point is that she was just showing a device to someone. If I'm going to spend my time blaming someone for the situation, it will be the aggressive thieves. Your approach makes sense. On the other hand, we can't have a society where some people are obligated to buy drinks for people who get pissed off and threaten them. We shouldn't blame people for not acquiescing to the demands of drunks or thieves.