*plainly* She didn't even remember my name when the King brought her home from Delving that very first day a year ago. But something I said to her last weekend made her recall every word we both said and the song we were playing on some random day thousands of years ago. She even remembered the King coming in and talking to us, and what he said about your dad. I'd wager she'd remember what she was wearing, if you asked her.
*looks you straight in the eye* I'm saying you should try to recreate a day for her. From Arda. Or an hour or a minute, even. As long as you can duplicate it in vivid detail.