During one particular Enclave meeting, Lilian expressed her concerns for the Magister's automatons and the possibility that an army the Shadowhunters could not defeat was being made. The others dismissed this as mere speculation. Months after, Lilian had seemingly been threatened by Benedict Lightwood into supporting his claim that Charlotte Branwell was unfit to run the London Institute, thus allowing him to challenge Charlotte for the position. When she commented about how the search for Axel Mortmain was being turned into a power game, Consul Josiah Wayland asked her if she was withdrawing her support for Benedict. A look from Benedict stopped her from speaking further.
She also attended the emergency meeting Consul Wayland called to discuss Charlotte's position as head of the London Enclave. Whether she was among those killed in the onslaught of Mortmain's automatons is unknown.
Lilian is a young woman who has dark, catlike eyes, dark hair, and, according to Tessa, a secretive demeanor.