She will be in at least 3 episodes, and even if she ends up being yet another woman killed off before reaching full potential, I at least wanted to give her a thread.
She reminds me so much of what I loved about the first Meg (I liked the second one too, but for different reasons), and Azalel/YED. She is delicious darkness. She loves being evil, and, unlike them, she has none of the even occasional hints of vulnerability. And she is a breath of fresh air compared to Crowley, where no amount of Mark Sheppard's charisma and talent can make me really want him as the main villain.
I'd never really seen Alaina Huffman before but I love her in this role.
I just wish she could go back to her old look, that beautiful silver dress stained with blood. It's like Abaddon slaughters the various pigs of Mad Men and then makes her way to Supernatural.