Lenna's Fimbulsummer (Book 2 of Lenna's Story) by James Comins
Price: Free! 45850 words.
Published on April 6, 2012. .
Now that the World Tree is shattered and the last dragon slain, the world will soon be destroyed in a flood of magic. Lenna's strange powers allow her to walk alone into an alternate reality inside the magic to repair the damage. But evil beings wait to ensnare her.