"Precisely why I'm suggesting your brother disguise himself," Robert points out, not mentioning that he didn't trust anyone within this conversation, either. Nor does he ask who Sarge is. It didn't matter to him. Anyone would have their own agenda, and a dozen justifiable reasons to sell them out.
"I don't intend to trust anyone with any information, dear." His expression was beseeching, hoping that she won't as well. It's hard enough for him to be transparent with her. He's not sure what to do with the knowledge that she might be sharing openly with two strangers. "As far as my men will know, you'd be meeting an escort to the library, to pay our respects as my proxy. They're sending their own people to escort you. It's a fairly simple arrangement that wouldn't warrant questions. We've had half a dozen similar escort requests put in already, and I imagine more will be trickling in over the next few weeks. I was thinking David Foster and Cassandra Lowe. They're not particularly ambitious, and David has already turned a blind eye to your actions in the past. He never reported to me that you were taking out a vehicle, and since he wasn't reprimanded for that, chances are he won't start questioning now. We don't need people informed. Just loyal enough to not ask questions, and willing to kill the undead for you. Human shields, not confidants."