Navy duvet cover set with white piping and monogram S

I lost it yesterday around 3pm near the east entrance of The Mall at Battle Creek on Capital Ave NE. It's a queen-size navy duvet cover set, soft cotton-poly, with white piping along the edges, and it comes with two matching shams. The duvet cover has a small monogram 'S' embroidered in the bottom-right corner and a tiny coffee stain shaped like a heart near the zipper. It’s in good condition otherwise, and this bedding has sentimental value—it was a gift from my grandmother, so I’m really hoping it shows up. If you found it, please reach out; I’d really appreciate getting it back.