Kingdom of Shadows and Wings by Nina Frost

A world of magic, desire, and intrigue awaits at Flighthaven, where a young woman defies the odds to find her true calling.

Nineteen-year-old Lark Axton has lived her entire life sequestered behind the castle’s walls, overshadowed by her overprotective mother. Now, the king has ordered Lark to assume her missing sister’s role as a warrior in training at Aclaris’s flight academy, where the kingdom’s sons and daughters train to battle their winged enemies and control dragons.
There’s just one problem. Lark is terrified of flying.
Forced to the deadly training grounds of Flighthaven, Lark must survive the danger that stalks the academy if she wants to uncover the truth behind her sister’s disappearance and survive the upcoming treacherous trial. Unfortunately, her sinfully irresistible, arrogant and downright irritating flight instructor is determined to make her life hell.
But enemies lurk within the academy, and no one is who they seem, including Lark herself. As the trial begins, the same explosive secrets that tore Lark’s sister away from Flighthaven now threaten Lark.

With her life hanging in the balance, Lark’s ability to unlock the secret magic within her will either save…or kill her.