Doctor, Smoke and Mirrors. Olkhovskaya Vlad

Dara Soter is the heiress of the ancient clan of evil spirits. That's just by the will of her father, both she and her brother refused the battles. Dara simply pulled away from the world of magic, and her brother went on: he became a doctor for magical creatures and began to work in Epion, one of the largest hospitals among cluster worlds. And now he is dead. His death is declared suicide, but the gift refuses to believe it. She is convinced that her brother killed the undead. In order to achieve justice, gift is arranged in Epion under the guise of an intern - and begins his own investigation in the world, where she is now the only person among nonhumans.