There are indeed plenty of mutual acquaintances who might kick up a fuss if they knew Zagreus was in a densely populated area uncontained. But he hadn't really thought of her as someone terribly likely to inspire enmity, unless it's just by association via her husband. He just really hasn't kept up with the social sphere like he ought to. Tsk, tsk.

"As much as it pains me to say, if any common friends show up, you'd probably do well to let my name go unsaid." Of course he wants the drop on anyone and everyone. But just as a piece of friendly advice, anyone with a history of brainwashing might warrant suspicion, if they're known to have been in contact with him.