The Memory Dress by Jade Beer

England, 2018: Jayne is quiet. She keeps to herself and has no grand expectations for her days. But after a chance encounter with her  elderly neighbor, Meredith, Jayne is forced to reevaluate her determination to keep the world at a distance. Meredith’s dust-covered home is chaotic and neglected. And slowly, Jayne starts to grasp that Meredith herself is quite lost. She can’t seem to remember anything: what she last ate, when she last went out or saw her daughter, or even Jayne’s name, despite what are becoming frequent visits. 

But most alarmingly, Meredith can’t remember where her husband is.

Unable to sit by and watch Meredith hurting, Jayne promises she’ll find William. But how can she when the biggest clue Jayne has is a mystery itself: a stunning couture gown with a note declaring it a personal gift to Meredith…from Princess Diana.