I like the whole black armor you did, it honestly sounds like the first thing I would so with something like this ^^
Yeah armour is one of the primary properties with this technique. With her having mastered it, the matter itself is incredibly compressed while being very light and manoeuvrable. She primarily wears the amour on her legs to give her the extra boost for kicks and running, however she can cover her entire body if she needed to. Her normal dt is able to control the arrangement of the atoms to manipulate its form, either having it an extension of her existing armour for further defence, or manipulate it as its own separate weapon (the sword). She can manipulate it for long range defence to protect others, however for fighting, she just prefers short range weapons.
