Red Unicorn

After several years traveling, Tanaquil—a sorceress like her mother with the ability to mend—returns home only to discover that her true love has been betrothed to her sister, Empress Lizra. Broken-hearted and jealous of her sister's happiness, Tanaquil is lured by a red unicorn into a mirror world where she encounters Tanakil, a diabolical version of herself. She discovers also several new powers. Powers she will need to foil Tanakil's sinister plot of revenge.