I will say, from the poorly placed film, it looked like she was part way up one of the doors/walls, whereas the others in view were still on the ground. Don’t know if there was a breach in a door/wall she was maybe trying to get through.
I don’t know what everyone was holding, so don’t know if this guy perceived any “weapons”, either.
But yes, he was very close, so I’d think he’d have some idea. Never got the impression most of these people had any real “armament”.
here’s a video that tells a story.
About 12 seconds in, you can catch a glimps of Ashli behind several men, one wrapped in a Gadsten flag. She’s clearly a female, with blond hair showing (that is she’s not disguised). Men are bashing on the door glass closest to the shooter, the panes of which are broken or shattered. One man is bashing the door exactly where Ashli would be in a few seconds. The videographer concentrates on the gun for the next 12 seconds.
Ashli again comes into view at 29 seconds. Was she hopping up like she’s going to get a better look thru the window, maybe she was going to go thru, maybe she was going to tell the shooter to holster his weapon? Cueing the tape to exactly 29 seconds, you’ll see the window is clear, she’s not “in” it, but that might be her hand reaching for the door. At 31 seconds, 2 seconds later, she’s already falling backwards, from hopping to falling backwards. Very much an up, shoot, down, fast as that.