String of Stardust by James Margaret Rose
"It is a farce for a wildflower, so meek and common, rooted firmly in the Earth, to fall in love with the Moon..." Despite her status as a noblewoman, Suzette always dreamt of becoming a baker; however, she never had the courage to fly away from her gilded cage. But once an ill-arranged marriage pushes her to the brink, she escapes with the help of her dear friend Hikaru, a mysterious man who lonesomely wanders the Earth. By his side, Suzette discovers a magical world unlike any she believed could exist—and most surprising of all, that this is not the first time she has known Hikaru...nor the first time she has been in love with him. But that life ended long ago. Suzette is an entirely new person, and much has changed in their decades of absence. As much as she wishes to recreate the idyllic life of her new memories, there may be no choice but to also recreate its tragedy. Note: Contains mature content that may not be suitable for younger readers.