Not defending her, but you're getting an only slightly exaggerated view of what many minimally supervised clerical jobs are like, especially since the rise of the internet.
In the places I've worked, nobody could rat anyone else out because everyone was doing it.
As for 15 jobs? I've held down 3 at a time once, because one was just an extension of one of the others, and paid like it was overtime. I gotta say, aside from the conflict of interest standpoint, she was killing it.