It's got a power port that resembles the one on the lightline, but at a much lower frequency, the sort of frequency you could just eyeball; and also there is much much much more magical energy bound up in this than in the lightline.
...actually she can tell what this is doing, it's not complicated. It's generating raw Newtonian force, pulling toward itself in all directions across a distance so vast that it might as well be infinite, except for an artificial dead zone in the immediate vicinity where they're standing now.