At first, Lily was somewhat puzzled.
Why did the Shadow Demoness act as if she had never seen her before?
But he was also very certain that this was the Shadow Demoness...
Aiwass had used the Shepherd's Nurturing Skill to share a part of the Shadow Demon's strength with him, just as if he had transplanted an organ for Lily to sense shadows. Because of the proportion issue, the Shadow Demon might not have felt anything special about Lily, but Lily was clearly able to sense the presence of the "mother body."
Even if he encountered other Shadow Demons due to his third-level Shadow Affinity, he could easily distinguish whether it was the one contracted with Aiwass.
Fortunately, Lily's subconscious response made the Shadow Demoness hesitate. Following Lily's words, it continued the conversation but directly exposed its identity.