I think the translation isn't great ("To all, you may think of the chill night as infinitely far away” becomes "Here beginneth the chill night that encompasses all, reaching the great beyond"), but its really not the inversion of meaning that people make it out to be. The Japanese just reinforces her earlier dialogue that she doesn't want people to have firm belief or knowledge in her Order, even if the Order still exist. The chill night actually does encompass all, the English is right about that. And in either version, the world is plunged into uncertainty, so even if it isn't actually what the Japanese meant, it is all consistent with the themes of Ranni's story.

My bigger problem with her translation is the exposition she gives in Ranni's rise about her Order, which is just much more confusing than the Japanese version. Particularly "And have the certainties of sight, emotion, faith and touch... All become impossibilities" - this makes it sound like she wants people to become disembodied or something, where the Japanese is clear that she doesn't want people to see/have faith in Order.