Hardcover Dune book with blue cover

I've been checking my bag since yesterday around 3pm. I was on the USM campus near the Cook Library steps when I last had it. It's a hardcover edition of Dune with a blue cloth cover, some edge wear, and a coffee stain on the bottom corner. Inside, there's a small red bookmark and a folded note tucked between pages 213 and 214. It has sentimental value—it was a gift from my late aunt, and I really need it back.