Spectral mirrors are technologically advanced mirrors designed to assist elves as they get ready, but many dislike their criticism. They are known to be very lifelike even though they are just cleverly programmed technology. They were first introduced in Book 2: Exile. When standing a few feet away from the mirror, it will activate and turn on. The same works for turning it off. Spectral mirrors also have an auto-erase feature that can be used to intentionally forget information.
It can be assumed that the author based spectral mirrors off human Artificial-Intelligence assistants.