I re-listened to some more of Shadowheart datamined voiced lines.

She has some dialogue about downsizing the party to only the trusted elements. This might be pointing out to the party lock being companions initiated.

She has a line that says
Challenging the gods for their domains? I just want my brain back!
. I'm starting to wonder what is the actual plot of the game, lol. She also has lines about finding a healer in Baldur's Gate, but one point out how far away it is so you would think it would be in the EA already, but I don't remember her ever bringing it up.

I'm back thinking there is some Moon Heresy stuff in Act 1 B or Sharran disguised their temple(s) into Selûne temple(s) in the region. She is as puzzled as me over it. But that would explain the Harper's journal saying the Selûnites in the region were heretical.