Navy Brooklinen duvet cover with initials AJ

I lost my navy Brooklinen duvet cover, queen size, with white piping, yesterday around 3pm near Zingerman's Deli on East Liberty Street in Ann Arbor. It's 100% cotton, very soft, and there's a tiny white embroidery 'AJ' in the top-left corner. It was a gift from my grandmother and has sentimental value. If anyone found it, please get in touch—I'd really appreciate getting it back.