The first time I watched Anna's eps I wasn't sure how I felt about her, but rewatching them while showing the show to a friend, I really did like her. I wanted to see more of her and Cas especially, because she understood people better than him. I was happy to see her in the "previouslies" but then the ep happened...

Yeah, they could've sent any angel after the boys! Or another sort of being! Or even had Anna do it but change her mind last-minute! Or have her get away when Michael came! So many options, but no, killing yet another woman was the way to go. Sigh.