She's clearly annoyed with the slutty behavior of the busty friend she introduced in ph gc 35, you can see that very well in the multi cam version. In ph gc 37 she ignores her completely. So her busty friend can really be herself and releases all her sluttyness in ph gc 37.
She is one of the still photographers, wearing a white blouse and floor-length skirt, in nearly every episode of that series. Usually only seen in the background, doesn't interact with anyone aside from getting in for closeup shots of some of the action.