The Mountain Ridgebacks (en Inglés) - Claire Bruno

It was supposed to be a random trip. But Sylvia Sash’s life takes an unexpected turn when a magical dog appears from the world Mlingo. An ordinary girl turned warrior embarks on an adventurous and terrifying journey encountering Woodland and Lakeland Elves, black unicorns of death, moss stags, barquest phantom dogs, Terrorius the dragon and the greatest evil of them all...the dark wizard Orthane. This earthbound being has to prove that she is not just a girl from another world.