Daphne - Jacksonville will likely get sideswiped my Matthew, meaning the storm will likely be east of the city. Unless the dynamics of this storm change for the worse, the strong winds are still fairly close to the center and diminish sharply as you move out from the center. So a move of 5 or 10 miles to the east would be very good. Also, Jacksonville is pretty far north so the storm will get scrubbed by the coastline as it moves up which would weaken the storm. Just tell your DD to keep vigilant and have an exit plan in place, just in case.
Blessings to you
