Cream queen duvet cover with blue monogram SL

I lost my cream queen duvet cover yesterday around 4:30pm in New Haven. It's a soft cotton sateen from Threshold, with a blue monogram 'SL' stitched on the top-left corner and a sturdy zipper that still works. There's a faint coffee stain on the inner seam and a touch of pilling from laundering, but otherwise it's in good condition. This duvet cover means a lot to me—it's the nightly comfort after stressful days, and I’d really appreciate getting it back. If you found it, please drop me a message here; I can meet near the Sterling Memorial Library on High Street or nearby Yale campus spots.