Madson, Devin. Shattered kingdom #1

"The old kingdom of Paicha has been split into city states, but there are those who seek to reunite the shattered realm-by force if necessary. Amidst the turmoil there are three who will find their destinies inextricably tangled. Tesha is a glassblower's apprentice who becomes a tribute bride when her city is conquered by the south. In the enemy's court, she's perfectly placed to sabotage them, but her heart has other plans. Naili is a laundress in the house of an eccentric alchemist who is awakening to strange new powers. When radicals approach her, she faces a choice between keeping her magic to herself and using it to change the world. And in the desolate Shield Mountains, dragon rider Ash protects the cities from the monsters in the Iipao sands beyond. But, soon he'll have to learn how to protect his dragon when hunters unlock the secret to killing them. As war sweeps across the land, Tesha, Naili, and Ash must fight for survival against political enemies, dragon hunters, and monsters both within and without."--