Deucalion nods at her question about whether he just arrived. Like Wanda, he too believes that everyone here was chosen. Though, whether it was by some actual physical being of this earth--he's skeptical. Deucalion believes in a greater power. Whether or not it's the Judaic or Christian Almighty God, he can't say. But he is confident that it exists. And whatever it is, isn't of this earth. It distributes souls and drives destiny.

Destiny could be a very likely explanation for their arrival.

Her words certainly pique his attention, or more specifically, her wording.

"Dimensions?" He asks, not a hint of doubt in his voice. More so, there's intrigue. "How can you be sure?"