Final answer:
Assess Kimmy's level of intoxication and consider stopping further service if she is drinking heavily at your bar.
Step-by-step explanation:
If Kimmy is drinking heavily at your bar, it is important to prioritize her well-being and safety.
Therefore, the best course of action is option C: assess her level of intoxication and consider stopping further service.
This involves observing her behavior, speech, coordination, and overall level of impairment.
If Kimmy shows signs of being overserved or intoxicated, it is crucial to refuse further service to prevent potential harm.