musing a bit on how the apple doesn’t fall far from the tree (Samuel and Mary, though i’m not necessarily critizing Mary’s actions here; will expand on that a bit more in the next bit), and i don’t have the exact quote, but Mary telling Sam: “when do we ever get something we want?”
because… once Dean and Sam find out that Cas, established explicitly once and for all as THEIR family in this episode, almost died because of Mary? That’s not gonna be pretty. And it feels very reminiscent of Samuel’s betrayal when they found out he was working for Crowley….
…and thinking about it, Samuel, in extension, was working for Cas. Kinda funny how that worked out :P but really, Cas and Mary do really have a lot more in common than they think they do. Working with someone the protagonists are opposed to for the greater good, and the build up to the eventual reveal that will cause feelings of betrayal.
(The way Cas was dying really reminded me of leviathans too; the black goo, the black cracks that ran along his body, rotting him slowly from inside out, no cure except to kill the source. The way the shot looked when Dean and Sam lifted Cas back up reminded me of how Bobby and Dean supported Cas back up after they put all the souls into Purgatory, right before he revealed that the leviathans are still inside him.)
And…well, we all know how well things ended for s6 Cas, after he went through with everything for the sake of the greater good. In a way, Mary is what Cas used to be, and Cas is hopefully what the endproduct that is Mary will look like.
I’m just hoping that this will eventually lead to Mary really feeling like she belongs with them, like how Cas came to be as shown in this episode.