I've always disliked Obrecht immensely, but for the first time I actually had some sympathy for her. When Faison said he'd have sex with her, but she'd have to wear the Anna mask, that was about as bad an insult as a person could have said.
The actress played it very well too. The shock, hurt & outrage were feelable.
Still dislike her immensely, but now I want her to be the one to dispose of Faison, with a satisfied smirk on her face.