Speaking as a mental health worker, I'd politely suggest it's best not to attempt to "diagnose" a personality disorder online on the basis of a few sentences from a family member. It's one of those diagnoses of last resort - especially as it often gets used as a reason to deny the individual so labelled a decent service... and speaking as a mental health worker, I'd also say leave the labels to the doctors and work with the person.

If the OP wants to PM me for general advice, particularly re the confidentiality/disclosure issues, please do.

Susan's definition of a "nonversation" is spot on, by the way!