[S7E5] Cersei acting quite calm

She really reminded me of Tywin this episode. It's clear Jaime expects her to get all mad at him and she remains seated, very calm and just keeps asking questions. And at the end, she whispers the threat in his ear. It was quite eerie and she has been known to have violent outbursts - none of that at all. Cool, cold, unyielding, no fire or passion.