The Jewel by Amy Ewing

I…did not like this. However, I know a lot of people do. Violet is one of the select few who are able to carry the children of the royal families, which is why she and hundreds of other girls are being sold to the royal women as surrogates. Violet is sold for a huge sum, and she becomes the nameless surrogate of The Duchess of the Lake, a cruel woman. While living with the Duchess, Violet learns of many of the dark, ugly secrets hiding behind the glittering castles of the Jewel. Her life might be in danger. There’s also the boy who belongs to the Duchess’s niece, who she can’t stop thinking about, despite only having talked to him once.