You can also make sure that your child knows your phone number and address. That they understand that no matter what anyone says about you that you love them very much. Trying to protect a child from a parental abduction is very difficult. Because you don't really want to make that child afraid of the other parent. But you do want to make that child understand that they have the right to say no, and they don't have to go with the other parent.
Parental abduction is a horrible crime on a child, because a child needs both parents.
They base their self esteem on their parents. They have a right to love both parents. And for one parent to take that right away from them is not a sign of love but a sign of abuse. I believe there are probably support groups for children who have been thru post traumatic stress, but not the kind that involve parental abduction. But right now there is nothing for children unfortunately.