Withholding a child from a parent and other family members is a very cruel thing to do. Dr Craig Childress has developed a method for assessing pathogenic parenting and a system for diagnosing Child Psychological Abuse using constructs in psychology linked to the bible of mental disorders which is the Diagnostic and Statistical Manual of Mental Disorders by the American Psychiatric Association affectionately known as the DSM. The DSM is currently in its 5th edition.
A child is born into their life with two life-rafts which are needed to protect them to survive. So they want to stay proximate to both parents and share love with both parents. They know that if one parent is damaged they are left with only one parent to protect them ie only one life-raft. They cannot accept this risk. This generates a state of cognitive dissonance where on one hand they want to be connected and share love to both parents yet on the other hand they need to protect one parent from the other one otherwise they could lose one parent.
In order to win the child custody case in the Family Court the Aligned Parent is aware that evidence is needed of the Rejected Parent's poor parenting practices. This is especially so in the case of younger children where the court places little weight on who the child says they want to be with. Given that most normal range rejected parents have little in the way of significant things that they have done wrong to the child so the Aligned Parent coaches the child about false or embellished things for the child to say to custody evaluator.
During the interview with the custody evaluator the child may have forgotten some of the alleged wrong doings so they make up their own. To overcome this problem some Aligned Parents give the child 'hate sheets' with wrong-doings of the Rejected Parent listed on them to take into the interview with the custody evaluator. Due to the child not really being bothered by things the rejected parent has done, when questioned by the custody evaluator the child's answers frequently come across as absurd, weak or frivolous reasons to reject a parent.