From the information presented thus far, it isn't at all clear if the most appropriate diagnosis for Kathy would be depression (she does report a depressed mood), an anxiety disorder of some sort (she reports having been anxious all the time and shaking), or an Axis II disorder (would Self-defeating Personality Disorder fit?).
Does this matter? Will the treatment approach be the same no matter what Kathy's diagnosis is or will an accurate diagnosis be useful in choosing an effective approach to treatment?