The Lost Queen by Frewin Jones

Once, Anita was an ordinary girl on the eve of her sixteenth birthday. Now she has assumed her true identity as Tania, the long-lost princess of the elegant Faerie court. She and her true love, Edric, must return to the Mortal World to seek her Faerie mother, Queen Titania, who disappeared hundreds of years ago searching for Tania. In London, Tania is torn between her mortal life and her new one. Dangers lurk, and Tania's two worlds soon collide in amazing and frightening ways she never could have anticipated . . .