From The Grey House:
“I watched as she spoke to ten individuals, yet only half remember talking to her. Interestingly enough, the ones claiming amnesia are some of the most flirtatious of your guests.” Vincent raised an inquisitive eyebrow. “The others stated she asked them questions of the city, like a tourist would ask. I considered talking to her myself, but I wanted you to witness it, in case I forget.”
“What is she doing when she talks to them?”