Sothis: "No need to feel so bad, Illyasviel. There is a reason such an old trick is still well-known; it still works... Oh, hey Byleth!"
Byleth: "You're still alright."
Sothis: "But I fear I may have held back to much; the Queen got away..."
Byleth: "That's alright. I don't believe we need her to stop drawing breath anyway."
Sothis: "Well, isn't that funny? You telling me that we shouldn't kill someone... but irony aside, if you believe so, I shall follow you."
-Illya didn't expect a self-proclaimed deity to listen to Byleth so easily, did she?-
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Zelda: "Lapis...?"
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Purah: "Does that mean they know how to build one too? How exciting~!"
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Kanna: "It's almost the same; you just don't see the portal."
-she's a Fire Emblem character, and warping is even part of a Fates DLC class, so of course Kanna would be familiar with the concept-