Board Thread:Speculation House/@comment-27121579-20160104011025/@comment-26397825-20160105021119

Here's the biggest tell:

The first image is her gathering the Dust from her dress, which she then fires at Glynda and Ruby and explodes the rooftop, which allows Glynda to make the second image.

Then the third image is the gesture she makes to create those swirling orange lights, and her arms are still glowing with dust, which results in Glynda using her semblance to throw both Ruby and herself forwards.

Her dress glows throughout the entire fight.