Board Thread:General Discussion/@comment-174.125.72.51-20151028020437/@comment-24891101-20151028020828

No, she is not. She's a few years older than the cast. Early twenties, probably.

And there was not a statemeny about Cinder's relation or lack thereof to Weiss. But at some point, you can't expect the creators to say that she's no related to every single cast member. Ruby was worth mentioning because of tropes, Yang because of fire, and Blake because of hair. Nothing links Cinder and Weiss.