Navy blue hardcover mystery with gold embossing

I’m really hoping someone picked it up. I lost my navy blue hardcover mystery yesterday around 3pm near Hackley Public Library on Webster Ave in Muskegon. It’s a Penguin edition with gold lettering on the spine and a coffee ring on the bottom right corner. Inside the front cover there’s a neon green bookmark with my initials 'PS' and a tiny sun doodle. It’s sentimental to me because it was a gift from my aunt and I was halfway through the last chapter. If you found it, I’d be forever grateful to get it back.