Swords Against Madness Brian C. Rideout

Miria, a smuggler awakes next to her sinking starship on a strange world, alone, with holes in her memories, and only the clothes on her back and her wrist computer....

Miria awakens in a hut at the edge of the ruined village, covered in blisters, and discoveres that she may well be living on borrowed time, and so is the A.I. on her ship, The Empyreal's Coin. As a madman plots her death, she stands before the council of the village to tell them a terrible truth about their beliefs...

Rayya, Olan, and Miria set out to acquire a magic dagger from a local miser to use against the immortal space barbarians known as the Gorum. This drags Miria into the religious cold war that runs through the Island's culture.