The idea of essentially a mysterious and uncertain path through the Fog/mountain is really promising and the escalation is really good!
Personally, I feel like there's a reasonable amount of mechanical work for the Guide to run this, and the outcome of what the module presents could be quite varied depending on some of those choices. I personally would have liked to see a bit more mechanical guidance which could take the place of some of the more story narrative elements. For example, how Yara makes a "decision" on location could replace the narrative quote.
Regardless, it leans into the more narrative style, which I'm growing to like more, and I suspect will create a really fun and slightly unique experience! Well done.