I remember briefly reading a book in high school (2004 to 2008) that was for young adults I believe and it was historical fiction.  The plot involved a woman, she was either homely or comely and she worked as servant and was promised to a deformed man that was kept shut away.  There was a picture of a candle on the front I think and the background was dark in color.  She was none too fond of the man and referred to him like he was a monster.  I don't remember if she grew warmer towards him.  Also, I think some people mocked her for her appearance and for being promised to a deformed man.