The talking head "points" about we get it, she lied, move on, are pretty obtuse. There are specific lies that go to the heart of premeditation. They need to be showcased to expose her. Compare to Casey Anthony (a devestating verdict because the jury wasn't given a proper circumstantial evidence tutorial), but I could see a lazy jury saying since they don't know how the murder happened, all the crazy post death behavior could be part of a coverup of an accident (I don't by that, but the jury used some version of that as a possibility). Here, there is so much evidence of planning that she pretends to have an innocent (laughable) explanation for, so to impeach her on the pre-murder lies is essential. He's not just making the point that she isn't credible. He's making the case for premeditation.
I agree she wont sleep tonight, which sadly will bring the fog to the witness stand. Page 10,741 of her playbook, right after the migraine impairment.