Board Thread:Speculation House/@comment-10390252-20130728185452/@comment-11188061-20140317074004

Or perhaps her father was the kind one, and the sibling was the overbearer.

The circumstantial evidence that Weiss might have a sibling would be her remark that she always wanted bunkbeds. Obviously bunkbeds come in pairs, so that must mean that she at least have companions of her age that she wanted to sleep in with. Though it could be just a random servant girl-boy or whatever.