Board Thread:Speculation House/@comment-29785214-20161018000345/@comment-26397825-20161018000851

The Silver Eyes are actually an entirely different thing to the Maiden Powers; they have their own legend surrounding them and the idea was around long before the Maidens were a thought in Monty's head.

Not to mention the silver eyes activation looks like great sweeping, bird-like wings as opposed to the butterfly-like small wings of the Maidens.

The better explanation is that Ruby's family has a genetic power that is completely separate from the Maidens, and the Ruby is not the Winter Maiden simply because she made light wings from her eyes.