Once, as I was entering an ABS, a chunky but very pretty woman was on her way out with her male partner. I entered the video booth area and with no one else in the store, snooped in each booth looking for signs of action. In the 'couples' booth I found a used condom on the floor, most likely from the young lady and her friend. I can't say if they were there just to entertain each other or if they would have invited me to participate in their fun. I guess I'll never know.
I've seen women in an ABS setting numerous times but never one in the video or theater areas and never one on the other side of a gloryhole.