Narcissism is a complex and often misunderstood character disorder. Less attention has been paid to the person who supplies what the narcissist needs.
This person is known as a narcissistic extension, and can suffer tremendous trauma and abuse while feeling blameworthy.
It is a difficult dilemma to solve, and is often perpetuated in adult relationships when children have had narcissistic parents, and less so, parents who act as narcissistic extensions.