"Then you should work on hiding better." Trouble finding you generally isn't good. You finding trouble, fine, but if it finds you she's observed one time too often that the one being found is insufficiently prepared. Or couldn't be prepared enough. Which, really, is fine if you are the trouble but not so much if you aren't.

She'll pull her hands back up after shutting the locket and pocketing it again, resting her left in her lap, and reach out for the figure of the saint that is currently facing away from Makoto, brushing her index finger over its face a few times until all the glitter has been transferred form her finger to the plastic surface. Only then does she drop her hand and pushes at the napkin it is placed on again as she did before, slowly turning the figure to face Makoto.

He saw her doing the thing, but the surface that is covered now shouldn't have been visible to him. She tilts her head to the side, regarding him curiously to see if it will show to at least this one other person now.