In severe circumstances involving a narcissist parent, you will have to take your matter to court and request a court order suspending parental rights until the other parent receives assistance. In some states of the US, you must establish that the presence of your ex as a parent causes a substantial risk to your kid in order to have parental time terminated. It is a significant responsibility that could take a very long time to establish. If the situation is not life-threatening, you will require some coping mechanisms.  Additionally, you would not want to be the person who mishandles the matter and the court can see that your behavior is equally as awful as the other parent's. Your response will have an effect on your case.