The general rule is to try to make everything about the child's best interests, and not direct the court to how you will be injured or the other parent's bad conduct. Courts don't like parents who play "poor me" or who try to cast the other parent as an "evil monster."
Based on what you've described, the only issue at this time is that the other parent should maintain the existing custody orders, and if she does, then you have no objection to the move. That's exactly how I would respond.
There are no online forms with which to respond to a custody modification action, so I cannot direct you to any. And, I'm not permitted to draft legal pleadings. If you need direct assistance and you cannot afford a lawyer, then for NC legal aid services, see:
Legal Aid of North Carolina, Inc.
Program Phone:(NNN) NNN-NNNN
Legal Assistance:(NNN) NNN-NNNN http://www.legalaidnc.org/
If you want to hire a lawyer, then see this link.
If you want to try to "do-it-yourself," then see this link.
Yes, professional practice guides are expensive. If you want to avoid the cost, you could visit a public or university law library -- but as you are in Tennessee, you may not be able to find relevant North Carolina materials in your state.
Hope this helps.