Imperfect (Disappeared #1) by Bronwyn Kienapple (2015)
-NetGalley Review-

YA Fiction | Historical Romance
Blurb:
“England, 1813. Lady Theodosia feels she has no choice but to marry a man she doesn’t love. That is until she stumbles into a different universe — an astonishing, mystical forest inhabited by the Nextic, a peaceful people who live close to nature.
Ahuil is fiercely independent until he meets Theodosia. Cut off from his own people, he nurses a dark secret. But in Theodosia he sees someone he can trust … and love. Continue reading
