Final answer:
Lillie's criticism of the caterer at her parents' anniversary reflects her personal standards and expectations from her college work experience in the catering industry.
Step-by-step explanation:
Lillie's attitude about how a caterer should act reflects her personal standards and expectations based on her previous experience in the catering industry. Her critical view of the catering staff chosen for her parents' anniversary likely comes from her own professional background and her knowledge of the standards of service, quality, and presentation she learned and practiced while working in that field in college. If her critique is based on a well-informed perspective, it can serve as constructive feedback for the caterer. However, if she's being unduly harsh, it might reflect a difficulty in separating her professional insights from her personal biases when evaluating others' work.