"I have come across a lot of strange things in my life, but I would never imagine coming to a place like this. Nor thought it was possible." Perhaps other villagers had experienced an alternative world or had proof of their existence. Bela's world was odd, just nothing like this place.

She knows that there are more questions to be asked. Bela wants to direct them to other people. Not just Margaery.

"A dream?" Bela replies, raising a brow. "Well. I suppose we could start with where you grew up. Whom you grew up with, and the place you were born."

The request wasn't too intrusive. She wasn't asking her for a detailed account of her past, and who she was. But she found it fascinating that Margaery seems to have gone through a change - maybe it was because of being in the village.