[Ana has been trained to notice the changes in body language, and she catches the slight tenseness there. It's odd but he's still smiling, so she is. Nope, nothing bad, nothing to see here, not even when she grins and holds up one hand in an open manner and speaks again.]

Good. See, darling, I knew you'd be perfect for what I had in mind. You'll definitely be able to keep my terrible crime a secret.

[Then with a little laugh and a flourish, Ana pulls the marker out from behind her back, the color cap a blue to go along with the red and the black ones that are still stuck forgotten in her bun.]

Behold, [Her grin is a little wider now.] the object of my great theft.