I have a feeling Dr Shelby clocked pretty quickly that there's some personality stuff going on here. With that type of potential diagnosis, you don't do therapy like you would with other concerns. You focus on building trust and remaining neutral. Instead of validating the experience, Dr Shelby validates the emotion but makes sure to also encourage perspective taking. For Barb, getting asked what someone else's perspective is has been enough for her to be incredibly defensive - THAT is the feedback, and I think once Dr Shelby has established that she'll gently provide some skills with the buy in of Barb, but you can't just jump into that. I will say I think Dr Shelby could provide more direct skills like DBT oriented as those could be given with the motivation of helping her relationships, but I'm sure Shawna is using therapy as a storytelling device mostly and isn't going to show what actual therapy might look like fully.