Board Thread:Speculation House/@comment-24.247.91.107-20140511154823/@comment-4617081-20140821131746

Yes, Ruby and Yang didn't have the same mother, making them half sisters. But from what I have been thinking and theorizing, there is a high possibility that Ruby isn't really a human this has been demonstrated throughout the series with many points that support this theory. I also think that maybe JUST maybe that Ruby might also have some sort of a connection with Cinder.