John Vornholt 
Troll Queen [EPUB ebook] 

Having freed the trolls of Dismal Swamp from the tyranny of Stygius Rex, the reluctant troll leader, Rollo, has left the swamp on a bittersweet mission: He plans to return his little friend Clipper to her people in the Forbidden Forest. It’s a dangerous trip, but he is determined to go.Ludicra, the troll who now finds Rollo worthy of her attention, is distraught over his absence and convinced he needs her help. So she assembles a crew of trolls, ogres, and even a gnome to cross the Great Chasm in search of her beloved. But the Chasm holds its own dangers and now the rescue party is in need of rescue!