The second woman is intangible.  An apparition, cast upon Procella's eyes through some dark magic, little more than a distraction.  She pays little attention to its words, or to its chill, instead fixing her narrowed eyes upon the real Hisame.  

The knife is knocked away, and sent spinning in the air like a steel butterfly, by an unseen wall that stands between it and its target.  The spirit sees this.  Something stands between her and this victim- and not only that, but shields the woman from the rain, keeping her dry even as the tempest builds.  The exact nature of this defense is beyond Procella, but she knows what it is.

Hisame is cowering, cowering in a [i]shelter[/i].  A storm has only one answer to this.

The spirit's lip curls, her mouth twisting into something between a snarl and a sneer, savage and spiteful.  "Ferocity?  That was mere annoyance... dear."

The katana is moving behind her, and within it moves negative charge, attracted to the tip by the positive Procella has gathered in her hand.  As it rushes towards her, she pretends not to notice, her eyes instead dropping to the dagger that had bounced off Hisame's shelter- then, without any warning, she suddenly pivots on her left foot, spinning all the way around as she moves to one side, away from the sword's path. She laughs merrily, and flings out a hand towards the ground.

Or, so it seems at a glance.  But she's not aiming for the dirt and the leaves, but rather for what lies among them, the silvery blade that had just failed in its flying assault.  Its conductivity makes it easy to gather a negative charge on the side facing Hisame.  And this, attracted to the positive charge gathered in her head to track her, produces a sudden arc of electricity, hot and bright, that leaps from the knife towards the woman, hitting her barrier with all its deadly energy.

Whether or not it is able to pierce the barrier and harm Hisame, the bolt comes without warning, and is extremely bright.  It is easily bright enough to blind for a moment, and noisy enough to mask the sound of rapid movement.  As soon as her attack is unleashed, Procella darts further to the left, into the trees, letting one blade fly to embed its point deep in a nearby trunk.