The room Cyneah, Ladon, and Thorn entered was dimly lit and filled with mirrors. With every movement they made, the mirrors appeared like mirages, giving them a false conception that others were with them. Luckily, with the latter two's natural senses and the former's inability to see, they were able to identify the movements as mere reflections.
Nonetheless, the mirrors made it hard for Ladon and Thorn to get a proper hold of their position, while Cyneah found it troubling to use her magic sense to get visuals of her surroundings. The cause for the latter was the magic energies being incapable of filling the surface of the mirrors. Whenever Cyneah directed her magic senses to cover the surface of the mirrors, the magic energies supporting her magic sense would pass through and be lost.