Board Thread:Speculation House/@comment-14138255-20130802021723/@comment-14909251-20141229232205

75.142.98.187 wrote: Didn't Monty say that Cinder isn't Ruby's (or Yang's, for that matter) mother?

We definitely know she isn't Yang's mother since Raven Branwen is obviously the mom. However, if Raven is somehow involved with the White Fang as her mask suggests then it could mean there is some connection between the two of them.