User blog comment:Jkphantom9/Random Volume 4 Predictions I have/@comment-24.93.195.246-20160227032532

I don't think Cinder was frozen.

Qrow would have mentioned something about her definetly. Otherwise Ruby and Co wouldn't be on their way to Haven to look for clues on someone who is frozen on top of the tower.

Or added that to the little exposition on Ruby's out of nowhere power.

The way he phrased his explanation to me seems that it works on Grimm only (probably)