User blog comment:ChishioKunrin/Reminder: Weiss' Semblance is Glyphs, Not Ice/@comment-17099359-20141128203442/@comment-24891101-20141128204605

Huh. Good point. Not sure how to explain that.

We see something similar with Cinder, actually, in the same engagement, when she uses her AoE. I am generally opposed to the notion that Semblances should be elemental powers, since there exists Dust for that purpose (Doylistically, at least), and having one's Semblance able to be replicated by Dust devalues the human soul.

One of the solutions is to attribute those glyphs to early installment weirdness, since I can't recall Glynda using them since, even in combat. Nor did she use them to reset the cafeteria. And both Ren and Cinder have used Aura purely defensively in about the same way as Glynda did, without glyphs, with only scale varying.