I assume that she was not called in by her superiors due to an "independent investigation" being started. There would never be a need for such thing. If her su

I assume that she was not called in by her superiors due to an "independent investigation" being started. There would never be a need for such thing. If her superior receives complaints from her employees about her, then they already know that she has problems. In management and human psychology, evidence does not matter—if her employees are all dissatisfied with her, then that is all you need to know. They can then either correct her or fire her. The presence of an "independent investigation" seems to look like someone didn't want to deal with the situation, and instead have an external party be responsible for it. That is irresponsible management from her superiors. Now, again, she might have been a prick worth firing, but I certainly do not find this response to be sensible, nor is her resignation proof of anything as any sensible person would quit a workplace that runs "investigations" against them (just like you are likely to quit a place where your boss is a bully).