Gorgeous, gorgeous imagery here. I love the idea of a mask of stars.
Maybe the only thing I would change is the last sentence in your second-to-last pgh – it sounds a bit repetitive. I think you could even leave it as “Oh how she would dance,” or something along those lines, and it will help the pacing.
But again, that’s nitpicking a really beautiful piece.

Lovely prose. There’s even hope for an aging universe when she wants to put her dancing shoes on. :)