Aw, I very much relate to writing a character that parallels or is sort of aspirational to a recovery of my own. I hope now that you've released the game you feel better or have clarity or whatever it is you needed.
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SPOILERS BELOW IF ANYONE ELSE IS READING THIS
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Regarding the ending, here's my personal take:
I was surprised by the note it ended on, but, after thinking on it, while it does feel a little "cliffhangery" it's good that it doesn't expand on, show, or even briefly mention how the big stuff shook out. Doing so would have gone against what the real story was and what the master wanted Vrin to experience. It would have cheapened the stories of and little connections made with the characters of the town. The final note would have put all focus on the grand ambitions of nations, rather than the joys and struggles and mysteries immediately around you, where you and everyone else actually exist. This isn't to say we shouldn't be conscious of and maybe sometimes even take part in the moving of mountains, but we shouldn't get so swept up in it that we stop living in the real space and lives surrounding us.
...aha, the more I think on this story, the more I realize how much it impacted me :p But yeah. I'm a big appreciator of unconventional endings, and all that stuff above is something I've already been wrestling with in my own life, so... maybe I was just especially primed to enjoy it lol. Regardless, I think you did great work c: