Look. She’s a woman. It’s late, she tired and wants to go home and these DAMNED MEN are arguing with her. So, she reverts to womanhood, and simply gets mad and leaves. It’s nothing more complicated than that.
She realized she was missing the beginning of Greta’s show.
I don’t know if it is just that. She has to be looking at this whole thing unfolding, and realizing her career is cooked no matter what. She has clearly, either through negligence or outright malice, misaligned the wheels of justice.
She can probably already see what the future holds, and the noose around that future seems to get tighter everytime the defense says anything at all.