[This question is so insane she can't actually react to how insane it is. It's like it pushed her all the way around to calm normalcy again.]

From their core crystals, Blades create weapons. They may use them themselves when situations call for it, but most commonly work in tandem with their Driver. The Driver fights while the Blade supplies ether to them and their weapon, and when sufficient power has accumulated, the Driver passes the weapon back to allow the Blade to unleash the accumulated elemental ether they have built up.