Board Thread:Speculation House/@comment-29785214-20161018000345/@comment-25936766-20161018001058

Watsonianly: 1-What froze the Dragon were, quite obviously, as it was pretty much mentioned right there and then: The Silver Eyes. No Maiden Powers, but another, arguably-bigger power.

2-Their eye color isn't even similar. The Winter Maiden's are still clearly-enough blue. Ruby's are white.

3-The Winter Maiden, in the WoR episode, had blue skin. In fact, all the Maidens had basically unaturally-colored skin, a la MLP:FiM's Human versions of the ponies. The actual Winter Maiden wouldn't necesarily be a Smurf.

Doylistically: Ruby is already a Silver Eye Warrior, very unique in itself, with enough power to freeze the Dragon. Making her a Maiden on top of that would make her a Mary Sue, and (Hopefully) the writers know that.