Simply discuss your reaction, be it positive or negative, to the ways in which the subject in the case study prepared for her job interview. You might choose to discuss how she prepared herself physically (e.g. attire), the decisions she made to make certain impressions, and/or the steps she took toward mastering the interview Q&A. You can talk about what you feel she did right or what she did wrong. This forum is yours. I do expect well thought out criticisms of this case study, and I expect the content of your post to reflect that level of attention.