[It can't be Ciel writing - if he needed Sebastian, he wouldn't write - but Sebastian still opens his journal as soon as he and Sakura part ways. As much as he'd like to get back to his own business... her of all people asking his help is intriguing enough that he'll tolerate the additional delay. In equally recognisable but far more old-fashioned cursive:]
Of course. I apologise for not answering sooner - I will be there shortly.
[Needless to say he's good for his word, and she'll see him approach mere minutes later, at a dignified pace, as usual. By now he knows what's happening with the memories, has probably experienced it himself a few times... of course his eyes go directly to the orb.]
Good afternoon, miss Moriarty. ...My, but they truly are everywhere today. [Hello hello. He has a decent idea already of what she wants, yes.]