Blue paperback mystery with floral bookmark

I lost my blue paperback mystery novel yesterday around 3pm near the Starbucks on Main Street in Huntington Village, Long Island. It's a standard mass-market paperback, about 320 pages, with a purple floral bookmark peeking out and a coffee stain on the back cover. Inside, there's a blue ink note on the first page: 'For Sarah, stay curious.' It has sentimental value because it's the book a friend lent me during a rough time last year, and I really need it back. If anyone found it, please get in touch.