What is she saying? Dokenai umai masa?
Or something like it?
At first I thought they used a made-up language, like Ico, but it can't be because Yoshiro and the villagers will speak whatever language selected in the menu.
Did they forget to translate it?
I'm sad we don't see Soh's face again. Is there a lore reason?
It turns out that they made up a language for the Seethe and the chanting. The made-up language is what Soh is speaking.