You look at the mouth for the truth, not the eyes. His mouth is very angry when he’s pronouncing his “truths”, but there are frequent little flashes of a characteristic smirk when he’s lying - almost too quick to notice, so many people don’t, but there nontheless.
Michelle is simpler - just plain angry, though with an affected veneer of recently learned pleasantness often pasted on. But basically just seething with a hostility that’s irrefutable. Ugly - and ugly goes clear to the bone.
This is why I refer to her as Militant Michelle.