[Glare. She's not going to dignify that first comment with a reply, because it would confirm what he's said.]

And yet you have done it, knowing it will upset you next week. Foolish. You could refrain from using your little device until the urge to speak passed, and we would have been none the wiser.

[She shakes her head.]

I suppose I must thank you for being so foolish. It has taught me not to trust you.