I have to respectfully disagree with you, Sammiejam. In the state of NC, these disorders will qualify you for Mental Health Counseling, Medication Evaluations, and Community Support Services- they are classified as Mental Health Disorders.
The difference is in the criteria for diagnosis, or her "symptoms". If we see manic and/or depressive symptoms in someone that has Bipolar, people would typically say, "That person is mentally ill." People do not typically think of manipulation and lying as mentally ill, though. Also, you do not typically see someone receiving mental health services for just a Personality Disorder. There is typically a co-occuring disorder (like a Substance Abuse Diagnosis, for example.) Why? Because people get into treatment by self or family report that they think something is wrong with them. Someone with a Personality Disorder is probably not ever going to think any thing is wrong with them. It is the rest of the world that is wrong, in their opinion. And friends and family are just going to say, "She is such a liar!" or "He is so manipulative!"
I don't know of any cases in particular where a Personality Disorder was used as a defense. (Though there may have been some.) My guess is that her psychological profile will come out with yes, a Personality Disorder, but also something else like Bipolar, Post Traumatic Stress Disorder, etc... The defense would use one of these to attempt to justify her being mentally ill.