…so the “Producer’s Preview” just strengthens my assumption that at the end of the episode Charlie will either end up in the hands of the Stynes and be treated as a hostage for a trade-off afainst the book of the damned or the guy they have in the bunker OR she ends up dead.
It’s been hinted at heavily that another “innocent” character, who has never been anything but helpful and a close friend of the Winchesters might end up in dire straits, because of the brother’s secret keeping when it comes to one of them trying to save the other without knowledge and ending up shovelling themselves in deeper and deeper.
And for god’s sake, Rowena even words exactly this, that Charlie feeling like Sam and Dean are her brothers will be her undoing. Pretty creepy foreshadowing if you take into account how a) almost anyone the Winchesters call family end up dead and b) how Charlie is framed with an archway saying “brothers”, which sort of gives the whole thing a looming feel of a headstone.
Don’t get me wrong, I really hope Charlie “only” ends up badly injured or in the hands of the Stynes, but everything suggests that it might end a lot worse. And tbh since we are playing through a bit of a S9 reversal it would kind of fit if Charlie died as a parallel to Kevin dying due to the brother’s keeping secrets from one another.