Final answer:
Mary's happiness, despite her job situation, may arise from internal factors such as strong faith and finding purpose, or external factors like engaging in meaningful activities or receiving support from loved ones, similar to characters in other literary contexts.
Step-by-step explanation:
The question asks why Mary is extremely happy despite struggling with finding a job. This scenario is not directly referenced in The Absolutely True Diary of a Part-Time Indian; however, we can infer from similar contexts in literature that individuals may find happiness in adversity through a variety of factors, such as a strong faith, a sense of purpose, and the support of family and friends. For example, the passage about Brown-Wright illustrates how faith was instrumental during her unemployment. Moreover, the character of Isabel finds cheerfulness through a change in her activities, which suggests that engagement in meaningful work can lead to happiness despite other hardships. Thus, Mary's happiness could stem from a combination of internal resilience, faith, purpose, and perhaps a shift in her activities that bring her joy, even as she faces the challenge of unemployment.