Time stamps: 0:40, 0:47, 2:27
Appears that a stream of dust motes wiz by and are lit by her cell phones light giving the false impression of a "glowing orb". At 2:27 one flys into the camera lens and disappears and I'm guessing it's some kind of air current at the back of her somewhere possibly from a fan turning on and off. I've considered the possibility of it being a firefly but it's simply too quick to be a firefly which I understand fireflys to be quite slow. Also firefly's don't emit white-blue light so I've ruled that out.