User blog comment:Zathronas/Analysis by an author: Peter Port/@comment-85.86.196.201-20131214223714/@comment-24218038-20131215173740

My interpretation is a bit different, I see the check up to see if she is ready for beacon, and if so make a proposal for entering Beacon. When she was caught up in the heist, it confirmed what they suspected and offered her a place with her sister. Look at it this way we see on the vid screen her fight in the streets only. Not in the store, not on the roof. So, Glynda happened to be there and either she had a recording device with her or she thought to get the recording from someone else? Sorry too much coincidence.

So my theory goes like this, Glynda is here to look into the possibility of offering Ruby a place in Beacon. She is not thrilled about an underage student at Beacon but for some reason Ozpin insist. So here she is following a kid to see if she is talented enough to survive Beacon. She hears a commotion and see a man going through the window with Ruby on top. She sees this as a perfect opportunity to find out if she is ready, so she takes her recorder and watch the fight evolve. When she see Ruby go on the roof and sees the plane she knows she needs to intervene.