Occasionally, a malignant narcissist will come right out and admit that she has some pretty serious faults. Why she will do this isn't entirely clear, at least to me. But I can think of a few possibilities. Remember, pathologically disordered people always have an angle (or several) and always have a target, someone they're trying to destroy.
It appears as if they engage in this exercise for a number of reasons. Everything a narcissist does serves a specific purpose. If it's early in the relationship, during the grooming phase, when they are probing you to uncover your strengths and weaknesses, they may hope you reciprocate with revealing some hidden faults of your own. Or, they may be trying to earn your trust. "See how honest and transparent I am." Perhaps they could be trying to explain away a certain deficit they know is readily apparent. This allows them to put their own spin on it. Also, by stating something incriminating, in a matter-of-fact manner, they manage to desensitize you to the fact that they're behavior is morally repulsive.
For some strange reason, these sadistic female narcissists sometimes even feed you information, as you're just getting to know them, which lets you know they can't be trusted. Pay attention to these revelations.
Of course, when a narcissist is no longer on her best behavior, and commits some outrageous act, she will also admit her faults in order to get back into your good graces. But this "apology" is only temporary. The fact she's trying to preserve the relationship only means that you still serve a purpose. As soon as you don't, she'll quickly discard you.
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