I think Ms. Posh Bitch was blaming both Sam and Dean, she (and Sam, ouch, ouch my poor heart) just thinks Dean's dead so she addressed Sam. And that's why I hate her. I mean, the Winchesters are trying to fix Chuck's fuck-ups against impossible odds and they usually eventually succeed, while she stays in her nice house, doing her fucking nails and playing secret society. I think I'm going to enjoy hating her, so I really hope she's a new villain and not a new ally with a rough start.