I think it’s a disservice for people to chalk her performance to this moment without context. The reason this moment was so chilling was because of the kooky caricature she was playing up until. The stark contrast and reveal of her true personality here is the most unsettling.
I will not accept any “Amy Madigan doesn’t deserve the Oscar” chatter when this is the material. People are so caught up in the kooky Aunt Gladys stuff they’re forgetting she’s a legitimately terrifying villain.