This is awesome!
While the art and audio are adequate it's the writing and world building that makes this game so compelling. The themes of loss and healing come through clearly. The characters are well written and I would definitely want to explore more of the world you've created.
Having made my own attempt at a (very) short sci-fi interactive fiction piece (with similar themes) I can really appreciate how much effort (and skill) this requires.
Overall a great game and I look forward to future updates :)