Quick, RWBY fandom, serious question!

I’m re-watching RWBY for like the 5th time and I just noticed something.

See that girl walking? This is season one. WHO THE HECK IS THAT? She’s wearing what looks like Glynda’s outfit but with Nora’s hair in blue. Why is she here? Why can we see her? She has to be important, right? Are there theories on this? Somebody please help.