Another Day

This is not a sequel - this book takes the story from Every Day ... and retells it from the perspective of Rhiannon. I enjoyed it, it's well written, I liked the characters and the pace - but am not sure it adds much to the story.
I read Every Day 4 years ago... I wonder if it would have been better if I'd re-read it before reading this one - so it was fresher in my mind. However, since it was a retelling of Every Day, I might not have been quite as enchanted to read this companion book right on the heels of finishing the first book - I suspect it would have felt a bit cumulative. With the 4-year gap between books - what I enjoyed was revisiting this world for a bit.
This cannot be read as a standalone, btw... it's a companion to the first book and is told with the idea that the reader already knows all the quirks of the world that A lives in.