Blue Penguin paperback found near Cannery Row

I found this blue Penguin Books edition paperback this afternoon around 1:45pm in the parking lot behind the Monterey Bay Aquarium on Cannery Row. It’s a 320-page mystery novel, cover creased and spine a bit worn, with a coffee ring on the back. Inside the front cover there’s a handwritten note in blue ink that reads 'For Mia, enjoy!' and a small yellow star sticker on the first blank page. The edges show slight yellowing, and there’s a faint sea air scent—clearly loved and read many times. If the owner recognizes these details, I’d really like to help get it back to them.