Board Thread:Speculation House/@comment-3257939-20131111020445/@comment-16774229-20131114030747

MarkNutt wrote: Monty has said outright that they are not step-sisters.

https://twitter.com/montyoum/status/399673609204940800 Thank you, I wasn't sure what everyone was referring to.

I suppose the most logical conclusion at this point is that they're have sisters. If Ruby were the older one, it would all fit perfectly (given Red like Roses part II seems to suggest that Ruby lost a parent) with Ruby's mother\father dying and the other parent remarried to Yang's mother\father. But that can't really work, so it could be any of the scenarios Devli suggested.