Westhee Edwards enhanced the data access layer of the lightningkite/lightning-server repository by implementing masked counting for model permissions and refining the handling of Not conditions in readsResultOf queries. Using Kotlin and leveraging skills in API and backend development as well as database management, Westhee focused on improving both the accuracy of data retrieval and the enforcement of security measures. The masked counting logic prevents sensitive permission data from being exposed, while the improved Not-condition handling ensures correct query semantics. These changes established a foundation for more granular access controls and better auditability, reflecting a thoughtful and security-conscious engineering approach.