Keep them

You've always been a bit of a trophy hunter, so you hold up her panties. "I will be keeping these," you inform her. "In fact, wait there for a moment." You rush out to your car, returning with your Polaroid camera.

"Hold them up please. Perfect. Now smile." You take the picture of Mrs. White holding up her panties and smiling and pin the picture on the wall with the panties pinned below it. "In about seven or eight months I'll take another one to complete the set."

Mrs. White smiles. "I can't wait. Okay Mr. Doe, goodbye. Please call me if you need anything." You escort her to the door and wave as she drives away. You spend the rest of the day unpacking. When night falls, you are finished and consider your next move.