Having gone through this for many, many years, we know in our particular case, the alienation began after the targeted parent remarried. Several people observed jealousy toward the new wife, on the part of the alienating parent. Others remarked that she obviously suffered from low self esteem.
Jealousy ….. low self-esteem ….. revenge …. feeling rejected by the targeted parent ….. anger ….. hate …..
There are many motivating factors behind parental alienation, none of which excuse the behavior. As a parent, a person should put their feelings aside for the betterment of their children.