So been following a little walkthrough and I can't find Miko in Mount Huji right now. The people in the shrine said she went to the volcano but I swear I've been all over the place in the boss room and she is not there. The guide says she should be there in the "eastern cavern" that should be the boss room but nothing.

I did jump to Puerto Valor real quick and a scene did play so IDK if that caused her (someone on the other side of the world) to despawn until I talked to Don W/E is name was.