"Ah, no thank you- not tonight, my dear. I can only stay a minute- long enough to tell you that you should bring our mutual friend my shop next week, in the late evening on the 15th... is this good for you? I have made arrangements for the photographer to come then..."
Marie kept her voice low, and smiled as if they were discussing an ordinary matter of having a photograph taken. Of course, it would be the photograph for Charlie's papers - the last step in their plan to hide him in plain sight.