A malignant narcissist wears a mask. Most people never get to see the pathetic character behind it. But her targets get a front-row view. Because the narcissist knows you've caught on to her game, she will attempt to neutralize you. Typically, this will be done with gossip, slander and forced isolation. She will attempt to drive you out of whatever organization she and you happen to belong to. This could be an informal group of mothers of young children, it could be ladies' society at church or it could play out in an office. All that matters to the narcissist is that people around her continue to view her as a nice person. She will do whatever it takes to protect her carefully crafted image.
It doesn't matter that you're a more mature person, and that you'd never dream of dragging other people into the drama, created by her. Narcissists are highly suspicious and ever on the lookout for potential stumbling blocks. (They really don't want that mask to slip from their face.) If she were in your position, she'd use every dirty trick in the book to win the battle. She expects you to do the same.
If you happen to spot a malignant narcissist at your place of employment, tread very lightly, to lessen your chances of being chosen as a target. Many character-flawed people are very good at sensing how we view them. The last thing you want is to be perceived as a threat.
That's because, in a workplace, narcissists usually prevail. When someone is targeted, most of the time they are driven from their position.
Even if a narcissist doesn't view a target as someone capable of exposing her, she may still try to disrupt a rival's employment, just because she can.
Malignant narcissists are sneaky and dangerous. But the more we learn about this disorder, especially as it presents itself in females, the better equipped we are to protect ourselves from these dangerous predators.