"The autobiography of Mrs. Tom Thumb: a novel" by Melanie Benjamin

 Levinia Bump was a real woman who stood less than three feet tall and lived in the 19th Century. She eventually married Tom Thumb, a well known performer for PT Barnum. Rich with historic detail, this novel explores how power and self determination can come to the smallest of women.
For your consideration, I recommend The Autobiography of Mrs. Tom Thumb a novel by Melanie Benjamin