[Rolling his eyes, he begins sifting through her books with clever fingers. He speaks as though distracted, but he is very, very focused.]

To my in-depth knowledge, there was only one person who knew the children were to be taken in by me. A contact. Also the only one who knew their exact identities - as well as one can know the identities of urchins.

[He clears his throat, inspects his nails, and pulls a book off the shelf to check its binding.]

That contact has been disposed of. They will be safe.