Offer to help look with her

"Come on, I'll help you look. With the two of us on the case, I'm sure we'll find it quickly enough. Where did you last see it?"

She let out a breath of relief, "Thank you, Jon!", and rushes over to you, giving you a brief hug and a peck on the cheek.

"I know I had it in the hall yesterday morning after we broke our fast. I haven't had a chance to check there yet though, but I can't imagine I would have been silly enough to leave it there!"