Memories of a Tree. Supernatural Reincarnations

Persephone is a tree spirit who has lived for many so years and grown so ancient and so powerful that she has developed human form. Though she prefers being a tree, there are advantages of being human. The people, for one, are very interesting to interact with. She enjoys a quiet life in her tree until she was suddenly attacked and her tree burned. With her original form destroyed, Persephone dies.
Years later, she wakes in the body of one of the wives of a bloodthirsty king. She spends a few weeks dealing with harem intrigues, sullen maids, and her husband utterly ignoring her before deciding that she would rather go on her own adventure. Surely no one will care if she forgets about being married and becomes a travelling magical mercenary, right?After all, there's no reason for King Lucifer to abandon his castle, leave all his beautiful wives behind, and go after her.
She is about to find out just how wrong she is.