What are the halachic obligations are to honor a mother or father that are a narcissist? An adult child may be trying to separate from emotional abuse and codependent relationship but this can often mean ignoring a parent(non-contact). Standing for a parent would reinforce unhealthy notions in the child.
I have looked at similar answers and am asking in regards to specifically narcissistic parents.
Harav Dovid Cohen shlit”a has stated [see addendum] that if interacting with an abusive parent makes a person emotionally ill then the child is exempt from this obligation. Since one is not required to spend more than a fifth of his assets for a mitzvas aseh then certainly one is not required to make himself sick. Obligating abused children to unconditionally honor their abusing parents will almost certainly exacerbate their emotional distress and/or disability and they are therefore, not obliged to do this.