Do we know if Yana has ever met any of the voice actors for Kuroshitsuji personally?
Yes, Yana met the voice actors on several occasions, e.g. at anime events =D
↑ This is Ono Daisuke (Sebastian’s VA) at the Kuroshitsuji event from 23 January 2011 and guess who drew the contract mark on his hand! It was Yana =D And she wrote “Britain is the best!” inside the contract mark, instead of ‘Tetragrammaton’ XD