Darcy is exhibiting characteristics of narcissistic personality disorder.
Personality Disorder refers to the different way of behaving and acting which is against the norms of the culture and the society. It causes the stress and problems in the functioning.
There are various types of personality disorder such as antisocial personality disorder, borderline personality disorder, histrionic personality disorder and narcissistic personality disorder.
According to the passage, Darcy has the narcissistic personality disorder which refers to the personality in which is a person is self obsessed and do not have empathy over others.
Thus Darcy wanted the attention of the people by announcing her pregnancy and miscarriage which shows her self obsessive nature and lack of empathy toward other.
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