Board Thread:General Discussion/@comment-26099499-20150226151824/@comment-26397825-20150825203745

The gereral consensus is that she is Qrow's sister, and that the young-looking model that 'looks like a copy of Yang' is just a placeholder model. Plus the fact that age differences are very hard to tell in RWBY (Look at Ozpin, he's meant to be super old and except for the grey hair doesn't look a day over 25 at most).