User blog comment:Xilinoc/Ch. 569 (You've been hit by / You've been struck by / Senbonzakura~)/@comment-4207271-20140219233531/@comment-26420452-20140220071207

She said that Sode no Shirayuki freezes her and the sword allows her to extend the freezing. In short, it freezes anything inside a radius equalling her sword and arm length. Her Bankai should have the ability to freeze at a distance and/or have a larger radius of action, judging from her pose before releasing and the pillar of luminous haze (?) that was created afterwards.