The story is fine for what it is, but the pacing tends to trip over itself. The main issue here is, essentially, timing. Either the story moves too fast (glosses over events that should have more screen time/weight) or too slow (focuses on minor scenes too often and repeats some feelings/ideas ad nauseam) ; characters are developed decently (the protagonist and the prince, surprisingly, but really only when he is a young boy) or just don't even make sense (the sister... kinda cam outta left field). I can see what the author was trying to get at--a repeated timeline story with a more melancholic/"adult" or mature tone--but the only emotion the author is able to portray is depression from a broken heart. Other emotions, like frustration or acceptance, aren't given the same quality of writing. It's a shame! 30 chapters doesn't sound like a lot, but you could achieve much more than what was presented here.
It's fine for a light, short read. Maybe if you're killing time on transit.