User blog comment:MrGrey27/Dust And Cinder's Dress/@comment-24435688-20140822183904

Crazy thought, but what if Glynda is the kind of person who infuses Dust to her own body?

It's far-fetched and not likely for a professor at Beacon to do something like that, but she does glow when fighting Cinder. She probably has Dust in her cape too, but maybe she can also act as her own source of Dust if need be.