A President doesn’t actually have the power to roll back reality. They’ll let Trump take office and try to kneecap him right away (something they are very good at). It would be easier and faster for the billionaire cabal who owns and operates her if Hillary wins, but they can still achieve their agenda with Trump in place.
Brexit + Trump would mean the proles are waking up. Get some Le Pen action in France and we’d have something going.