Does your daughter have a lead foot? 2000 miles is way over 24 hours of driving and that assumes no extended breaks or heavy traffic. Simple math says to drive 2000 miles in 24 hours you need to average over 83 miles an hour?

I would guess that a more likely average speed for a drive that long, assuming multiple drivers trading off and not stopping for more than fuel and bathroom breaks, would be about 60mph average. That would take a bit over 33 hours.