Blue quilted Brooklinen king-size duvet cover

I lost my blue quilted king-size duvet cover from Brooklinen yesterday around 3pm. I last saw it on my bed in my Lake Grove apartment near Smith Haven Mall on Route 347, and I think I might have left it in the car when I ran into Trader Joe's in the mall parking lot. It's in good condition overall, just a little wrinkled from being slept under, with a tiny coffee stain along the top edge and the Brooklinen label sewn inside. It has sentimental value—it was a gift from my grandmother and really helps me sleep at night. If anyone found it in the parking lot behind the mall or near Barnes & Noble, please contact me; I’d be forever grateful to have it back.