Sarah might be a little upset at not getting paid for such a peep show, not so much for the actual nudity. As for the combat, Sarah could cloak the area in darkness and the lightning would cut through it in swathes but it would be like a strobe flashlight. It would be very hard to find Darkshadow in such a situation. This however is balanced by Sarah's barriers and costume providing no protection whatsoever. A lightning bolt might as well be a laser for her purposes,