Allen L. Wold
This book can be downloaded and read in iBooks on your Mac or iOS device.
Jeanette steps from a moving train into a multidimensional maze, which is a part of something greater. The miniature world at the center of the maze is the center of all things, even beyond the maze. The dark outside force has sent a tempter to bring about its downfall.
Jeanette goes to a world of layers: the Sea of Grass; huge mesas of untouched forest; the Midlands of the people, whose culture is hundreds of thousands of years old; and the desert Uplands where demons dwell. An old enemy has come, and Jeanette, believed to be a demon, must keep him from enslaving the people.
An agent of the enemy brings unnatural winter to her world, and comes itself to attack her in her home at night. In a world similar to her own, she must first deal with the unnatural winter, then find the agent, in a stolen tower house, bigger on the inside than on the outside.
She must prove herself again, and again. She must show not only her greater courage, strength, and leadership, but learn to control her rage, and show compassion.