Board Thread:General Discussion/@comment-98.218.70.24-20150317164438/@comment-4010415-20150317225817

I think it's pretty possible that Ruby doesn't know, and it really would make for an interesting plot device.

It may also lead to Ruby still thinking Qrow is her blood-related uncle, if Qrow really is the brother of Yang's mother. Though, I'm still pretty sure that Ruby would continue calling Qrow her uncle even after finding out he's really only Yang's uncle.