Author Jendia Gammon wrote on Bluesky:

This is the sequel to my Nebula and BSFA finalist, young adult Lunarpunk novel, THE INN AT THE AMETHYST LANTERN (writing as J. Dianne Dotson)

Author/critic Kara Dennison states in her review:

Much like its predecessor, The Secret of the Sapphire Sentinel is the kind of post-apocalyptic story we need in this day and age: one full of hope for the future. The ongoing story of Glimmerbright presents a future world that isn’t just survivable; it’s colorful, exciting, and brimming with life. Nor does this book ever talk down to its younger readers, tackling the difficult in-between teenage years when we aren’t sure whether it’s us changing dramatically or everyone else. Equal parts futuristic sci-fi, whimsical fantasy, and teen romance, this is a worthy successor to The Inn at the Amethyst Lantern.

Available from Android Press