This is an NGADM judge review.
Even with my soft spot for solo instrument pieces, especially from you, I think that the greatest strength is truly in the compositional elements. Those little chord changes and temporary key changes really help in expressing your feelings to the listener, and of course the song feels fresh throughout the entire time too. The way that everything is balanced also keeps a good hold on the mastering side of things, and I think sound design goes without saying as well.
If I had to nitpick, I think things could be a little more rubato overall. A lot of the song is pretty well-kept in terms of the tempo, but I think you can play with it a bit and work on some of the phrases, not just with the volume but with the tempo as well, in the middle portion of the song.
Overall, I think this is truly a song fit to honor someone. I'm sorry for your loss LSD, but know that what you're doing, even if it isn't perfect, is making her proud.