Final answer:
Dr. Guerrero is practicing integrative therapy, combining a behavioral approach for panic disorder and a cognitive therapy approach for major depressive disorder.
Step-by-step explanation:
Dr. Guerrero is practicing integrative therapy. Integrative therapy is an approach that combines various therapeutic techniques from different theoretical perspectives to provide comprehensive treatment. In this case, Dr. Guerrero is using a behavioral approach for panic disorder and a cognitive therapy approach for major depressive disorder. By combining these two approaches, she can address both the behavioral and cognitive aspects of these disorders.