Martha and Susan both lack self-confidence. Martha is fearful of criticism, so she keeps apart from others. Susan is unwilling to assume responsibility, so she stays in relationships with men who control her life. According to the DSM-5, Martha is , while Susan is .

Avoid-ant, dependent

Explanation:

An avoid-ant personality disorder is a psychological disorder. It is about the extreme level of inhibition from the society, the inadequacy, and the sensitivity about the negative criticism and avoidance. In this personality disorder, a person suffers from their daily activities with others and maintaining their relationship.  

Dependent personality disorder:

It is an anxious personality disorder. In this personality, the disordered person is not able to work alone. In this personality disorder, the person feels anxious if someone is not around them. They have low motivation and self-confidence.