"Never happened" is one. She'd claim that the the event of her doing wrong – calling others names, sabotaging others' performance, behaving in an immature, passive-aggressive kind of way – never happened. "Yeah, it did" is met with further denial. Maybe she'll admit she did that, but only because it was justified: maybe she felt so bad she could do nothing else, or maybe someone forced her to behave badly.

In general, her negative traits are flung under the rug, and her positive traits are put under the limelight. She would never admit to not knowing things, unless not knowing things puts the responsibility for the failure away from her. She'd also claim how good at <something> she is ("I'm such a good psychologist! I understand people so well!"), and any attempt at countering her positivity assertions are dismissed passively.

I suspect her faking illness – presenting herself as ailing to gain attention and sympathy, which becomes self-fulfilling bullshit – also has something to do with the perpetual-victim mentality that underlies narcissism.