Istredd doesn't question Yennefer's focus on being at the queen's side. That is what the mages were trained for. Serving royalty but for your own purposes, finding power and cultivating what it can do for you. As if Istredd won't do the same with Ambrose, if it got him closer to what he needs.

"Yes, we want to be your allies, please help." Istredd smiles. In Thorne he's confident of his wards, but the Fey have Seelie magic. Completely different. No way of knowing if his Chaos can in any way combat it. Maybe with experience he could learn how, but not now. If they are snooping, there is nothing he can do.

Istredd runs his hand down Lucifer's back and up again, a casual caress. I think I could, but it's too risky of an offense. It's not that he would read their minds, he has a suspicion that would immediately be responded, he does think he could pick out human vs. inhuman minds. He's done it before. Lucifer, for example, he picked out that way.

If they are here, it could be why they reached out. Maybe they've been interested in us from the start.