Speechless in Achten Tan

Mila hasn't spoken in the five years since she became a first-level Everfall witch. After failing the test to reclaim her voice and control her magic, her mentor sends eighteen-year-old Mila to Achten Tan-City of Dust-a dangerous desert town, built in the massive ribcage of an extinct leviathan.
To reclaim her power, Mila must steal a magical staff from evil Bone Master Opu Haku's sky-high lair.
Her only resources are the magical luminous elixirs of the cursed caverns where she grew up, and a band of unlikely allies; a quirky inventor, a giant-ant rider, a healer, a librarian's assistant, a Tar-tule rider, and the chief's playboy son.
But in the City of Bones, enemies & friends are not who they seem, and trusting the wrong person can be deadly.
If Mila fails, she will never speak again and her bones will be added to the desert.

This book includes a kick-ass tattooed witch who can't speak, giant ants, first-person present-tense narration, magic, banter, a heist by a diverse cast, and cute boys kissing.