I think what you're asking is very hard to answer with a general answer. It all depends on the way the child was brought up. A golden child of a narcissist, as you first asked, as we stated can very easily become borderline, needing the constant validation of parents and others. They could also become narcissistic. It depends entirely on the person and their unique situation. They could also be normal, or any other type of person, but generally, a child of a narcissist becomes borderline because of the lack of self esteem instilled in them by their parent. This is the most common issue that arises. I think what would help is a bit more specific information, as you seem to be talking about something more specific, but not giving those details.