Lost & found printed media in Tampa Bay Area

Blue paperback mystery with orange sticker

Found a blue paperback mystery this afternoon around 2:15 pm outside the Starbucks at Hyde Park Village in Tampa. It's a mass-market paperback in decent condition, with a small orange circular sticker on the back cover and a fabric bookmark featuring dolphins tucked between pages 60 and 61. I also found a receipt for a coffee dated last Monday and a pressed lavender stem between the pages. I figured someone might be missing it, so here I am—hope to help reunite it with its reader. If you think it's yours, message me with the cover illustration or the unique sticker.