Since the deal, I don't think there have been any proven lies by KK regarding the substantive facts/evidence related to the case.
If there were, her sweetie beauty of a deal would have been declared null and void.
Where I think it can safely be argued KK has been less than truthful, which is to say, completely disingenuous, is in matters where she ascribes motives to her own actions/inactions in an attempt to make herself sound like less of a completely vile, loathsome snake.
But what KK's internal processes are, e.g., her thoughts, feelings, etc. can't be proven or disproven, because they're intangibles.
Hopefully, DA May won't even give her the opportunity to talk about what she was thinking and feeling, because really, who cares?
JMO.