User blog comment:TheNewProtagonist/Vol. 2 Episode 3 - And everyone's brains exploded./@comment-9464517-20140810112514

The best part about this is that you're totally right about Winter. Nobody, and I mean NOBODY, saw that coming.

...Well, to my knowledge at least. There might have been a couple of AU fanfic writers who gave Weiss a sister, but it certainly came out of left field a little.