Imo, seriously, she's MORE likely to respect you if you stand up for yourself.
So stop all the self loathing you've wallowed in for too long.
You are a good dad so be a good father and assert your rights to your son's time and being in his life.
If you do NOT FEEL LIKE moving to South Carolina (and if you do not have some good plans for how YOU will live there)
do not move there, and object to her doing so if it means taking son. This is how & where you draw the line in the sand.
If not now, when?
M: 57 H: 60 M: 35 yrs S30,D28,D19 H off to Alaska 2006 Recon 7/07- 8/08 *2016* X = "ALASKA 2.0" GROUND HOG DAY I File D 10/16 OW DIV 2/26/2018 X marries OW 5/2016