Court-ordered coparenting is pretty much doomed to fail when one of the parents is highly narcissistic.  When the courts take a one-size-fits-all approach to coparenting expectations and standards, they end up creating a sure-to-fail situation where everyone involved loses.  That is, everyone except those who directly profit from the increased conflict, legal expenses, and court-ordered therapy work that is generated by trying to force those who are incapable of collaborative parenting into an idealistic coparenting model.