The Magician (An Arcana Short) by Madeline Claire Franklin
Approx. 14,590 words.
Published on July 23, 2013.
So long as Ana can see the demons that stalk us in the shadows, her life is in danger. In order to stay alive, Ana must learn to use magic like her new friend, Trebor, a not-quite-human soldier from another world. But learning about magic is easy--it's learning to control her own power that's the hard part.