An Exchange of Gifts (1995) by Anne McCaffey is a very sweet YA fantasy romance. My copy has illustrations by Pat Morrissey. In this short tale, a princess run away to live in the wood and pursue her true gift, gardening. The story itself is fairy tale like, existing out of time and space. The twists and turns prove simple and easy to follow. Forget realism.
There's nothing special about the story. I made the mistake of putting it down, so it stayed unfinished for a week. Likewise, there's nothing wrong with the tale, so once you get going, you'll roll through it.