Istredd's eyes widen at the implication as this is a clear line they made between them and he has not crossed in the slightest. A sign of wary trust or at least understanding no matter what there are ears here. No one would be able to listen in on his telepathy, it is the most warded skill that he has. His mind is the toughest part about him.

He inclines his head in understanding and sits on his bed. Eye contact actually helps since it requires him moving past Lucifer's defenses and doing that through the eyes makes it very smooth. It's one of the very first magical lessons he had.

Depending on how Lucifer's mind conversations or telepathy has gone before, he'll find this is just as gentle as he would expect from the quiet mage. Gentle but strong at the same time, wielding it well, although he knows little of what he'd find, but Istredd is as steady as he seems.

What happened with Wilhelm?