OK, thanks, that makes more sense to me. I was missing part of your point. I was 100% expecting Brie to be the one to die if they opened the seal (which I still think was a bad idea). During the episode when Daegon decided he was going to be the one to open the seal I thought that was an excellent twist which completely made sense because of what he thought needed to happen. Daegon's decision / speach and the G2 members saying their goodbyes was great drama, and it felt like the moment was cheated by the last minute switch to Brie (my opinion in this case; others may well disagree). Jason has explained Brie's mindset and how she came to the decision in the group chats or other content (quite possibly on Patreon; I don't recall where unfortunately) and that made sense, I just think if it was Daegon it would have been more dramatic and, quite frankly more tragic with yet another multi-character hit to G2.
As I've said elsewhere, the show isn't written ahead of time and the combination of input from the players and DM is what makes things compelling and fun to listen to, but it is fun to speculate on how things might have been different or what will happen next. I definitely didn't pick up on / think of the trope as you did, but thanks again for explaining it further.
I just want to point out a possibility onto why Brie waited until after the goodbyes other than building drama. Maybe, for just that moment, Brie saw a chance of her living her days out with Una. That moment, she was hopeful. But as the moment was ending, she realized it made no sense for Daegon, someone perfectly healthy, to die when she was so sickly, and would likely die shortly after the Blood Moon, whether or not the seal was opened (either the Witch would be no more and the spell keeping her alive is lifted, or the Witch becomes irate, and lifts the curse to kill Brie in an act of "justice" [revenge]). Brie was merely lost in a moment of false hope, and found herself before it was too late.
-Kephalos Ploutarchos, Human Avenger of the Raven Queen in Aubrey
-Atronach Billow, Tiefling Ranger from Durhollow
-Josh from Wisconsin