It would have been dismissed in Westeros, especially by Margaery. Hers was a world of cleverness, perhaps not reason or sense, but at least some sort of intelligence, even if it was insane. It wasn't surprising for abilities to exist in this village or for others to accept them. She almost anticipated Bela's response, though she wasn't sure why.

"I saw someone being sacrificed, someone killing someone else." It made her shiver, a dull pain behind her eyes, but no longer overpowering as it once was. When her memory returned, it was almost as though it compensated for the earlier headaches.

"It helps that some of us have been here for a long while. There is no other way for us to be but calm. I think that helps temper newer arrivals." So long as there was no mass chaos, they could get through this.