Will's catchphrase "Don't think too hard about it, you'll get a headache" sounds like very solid advice in this case I'm afraid.
I call meta-shenanigans and maintain that Bernkastel is
at least heavily stacking cards to tell the story she wants to tell, whether it has any relation to truth or not.
EDIT: Notice that according to Ep6, Gamemaster's job actually contains two functions.
- Write the story.
- Interact with the player as they interact with the story.
These functions can be distributed between multiple entities.