User blog comment:Zathronas/Analysis by an author: Beacon Ozpin/@comment-24218038-20131210201838/@comment-5217560-20131211021148

Hmm I like the idea of that being her weapon but honestly I think that her dress is just an indication of her using her powers. I say this because she never really uses the dress itself as a weapon, rather it reacts to her activation of her dust or semblance ability. It's synonmonous with Ruby's cape emitting roses whenever she uses her semblance. That's my opinion at least!