Board Thread:Episode Discussion/@comment-4141313-20181124081953/@comment-26397825-20181128051951

If she had the ability to direct tiny little wisps of Dust to such a degree, in battle that would translate to at least being able to throw a fireball in a general direction without any assistence. As Chish pointed out, she cannot.

There are some things where scale does make sense. Skill to that level becoming non-existent simply due to a battle does not. The skill would still exist it merely wouldn't be as controlled - without a glyph she would shoot in straight lines instead of precise targeting.