She indeed should.

But that is not to dismiss observations of family and friends.

Yeah, I see you the error, borderline is a personality disorder, not "defective mind" (which is offensive thing to say actually).

Aside from few expection when physicalities demonstrate in the "mind" (that still doesn't mean "defect in the brain")... I don't fall for the "broken brain" model. Most people improve when improving their overall lifes and ways of living and thinking. So it's so much more complex