Enchanted by Magic — Gloria Harchar

It was another crazy mission. Allegro and Largo thought they'd seen the toughest test that two semi-competent, always bickering faeries from the magical, musical kingdom of Quelgheny could see, but again they were being asked the impossible. Get the duke of Chillhart, Grant Hale, to fall in love with the daughter of a criminal? Why, even if she was better than her thieving sire, even if she had fit herself into Regency society, Lauren Miller's father had incited Grant's father to kill himself! She smelled of wildflowers and her features were winsome, but would Grant see Lauren had the inner beauty to match? For these two humans to find harmony, they'd have to be enchanted by magic. Luckily, Allegro and Largo knew just the trick.