I arrived as quickly as I could when I heard that this was happening, and I did see someone matching that description during the drop-off. Is it just a mild curiosity? If your other lives have ties, then what affects her could very well affect you too, even if not immediately.

[He pauses, seeming to weight whether or not to say what follows.]

...that being said, in your place, I'd definitely want to know all I could about anyone sharing my other life, and I'd resent being asked for additional reasons.