Why not take some time off, a week or so, and go down to South Carolina. See for yourself what it is or isn't. What your job opportunities might be, salaries, general cost of living things.
Get all the information. Think it over critically, taking her out of the situation.
What is best for you?
Will I be happier here or there?
Things change in a hurry, and if you are moving to make someone else happy it will not turn out well.