Read it through once

"The fact is," Mr. van der Luyden continued, stroking his long grey leg with a bloodless hand weighed down by the Patroon's great signet-ring, "the fact is, I dropped in to thank her for the very pretty note she wrote me about my flowers; and also--but this is between ourselves, of course--to give her a friendly warning about allowing the Duke to carry her off to parties with him. I don't know if you've heard--"