The Wells of Sorcery Series by Django Wexler

In the lower wards of Kahnzoka, the great port city of the Blessed Empire, eighteen-year-old ward boss Isoka comes to collect when there's money owing. When her ability to access the Well of Combat is discovered by the Empire—an ability she should have declared and placed at His Imperial Majesty's service—she's sent on an impossible mission: steal Soliton, a legendary ghost ship—a ship from which no one has ever returned. If she fails, her sister’s life is forfeit.

Django Wexler's City of Stone and Silence is the second book in the cinematic fantasy Wells of Sorcery Trilogy featuring a fierce young woman skilled in the art of combat magic on an epic mission to steal a ghost ship...

Siege of Rage and Ruin is the explosive final adventure in Django Wexler's The Wells of Sorcery trilogy, an action-packed epic fantasy saga.Isoka has done the impossible--she's captured the ghost ship Soliton.With her crew of mages, including the love of her life Princess Meroe, Isoka returns to the empire that sent her on her deadly mission. She's ready to hand over the ghost ship as ransom for her sister Tori's life, but arrives to find her home city under siege... moreSiege of Rage and Ruin is the explosive final adventure in Django Wexler's The Wells of Sorcery trilogy, an action-packed epic fantasy saga.Isoka has done the impossible--she's captured the ghost ship Soliton.With her crew of mages, including the love of her life Princess Meroe, Isoka returns to the empire that sent her on her deadly mission. She's ready to hand over the ghost ship as ransom for her sister Tori's life, but arrives to find her home city under siege. And Tori at the helm of a rebellion.Neither Isoka's mastery of combat magic, nor Tori's proficiency with mind control, could have prepared them for the feelings their reunion surfaces. But they're soon drawn back into the rebels' fight to free the city that almost killed them. less