Sounds like Boarderline Personality Disorder or BPD to me. It's emotional regulation issues ranging from characteristics or benign to malignant. The anxiety is caused by fast paced thoughts, not having enough emotional release, compulsive thinking , and extreme thinking and thought hopping which is going on in the back of the person's mind even though it may not be relevant to the situation at hand and time. People with mild forms of ADD also have this. Hence "The Jeckyl and Hyde Effect"
Looked up impulsive borderline personality and that has a pretty good description of W. She's definately anxious and with narcissistic tendencies but she does not have all characteristics so who knows. Never would I bring it up, she didn't talk to me for two weeks when I suggested years ago she had PND (which she did and admitted years later).
