"Yes, a young woman named Sabine, very friendly, and a Lord John Grey. He recited poetry tonight." Istredd thinks Sabine was around the party as well, so it seems they both are attempting to get out and about as newcomers. None of them were really in the mood to greet the new Summoned, so it's probably for the best they were just fine doing it themselves.

Istredd shows Lucifer both faces in their bond so he knows who the people in question are, one of the easy ways of sharing information that's second hand to them now. He undoes his tie and vest, this is the other part he didn't miss about dressing up, the layers it takes to get comfortable.

"You know better than that. When I agreed to help Rhy, it became my responsibility." Maybe not to watch out for them at all times, but it was his responsibility to be there and help them walk through the first days of being here. Help them into the Horizon, offer to teach them magic. Istredd takes it seriously. He might have a good excuse, since he has been hiding in his room or the Horizon, but still.

Be careful with that jacket, I think it's my favorite thing you own. He flirts. It's definitely the snake thing. He associates Lucifer and snakes now, it's intentional.