Board Thread:Episode Discussion/@comment-1599757-20151212162645/@comment-4010415-20151216015945

I actually have a theory that Dust came from the Maidens.

Anyway, Ruby's rose petals are not proof that she's a Maiden.

Yang's Semblance is not flames. Her Semblance allows her to convert the damage she has taken into energy that powers up her attacks. The flames are a side effect - a visual manifestation of her Aura. That is what Ruby's rose petals are - a visual manifestation of her Aura.

We've seen Blake have the same thing happen, in the Black Trailer, when she was using her Semblance while fighting the Spider Droid.

Nora's pink lightning may be similar.

Some people have visual manifestations of their Aura, without being Maidens.