If she takes the advice to flee, manufacture documents and live outside the system, she risks having all custody taken away from her and full custody given to her abusive ex. If what she says about the body order is true, then if she's ever pulled over, she's going to lose her child, even temporarily.
Right now, she lives in another state and the ex has not exercised any parental rights. With a decent lawyer, and the evidence from the previous restraining order, she's got a good chance of getting full custody and another restraining order, and getting the body order (whatever the heck that means) removed. Right now she's living in fear because of something someone at the courthouse told her.