Lady Be Good; Amber Brock

This book was set in the 1950's. The only child of a hotel mogul is told she can ether learn the business and inherit it or marry the manager of the business and just be supported by the company's earnings. She ends up falling in love with a Jewish musician, which is taboo in her elite circles. She has dedicated her life to trying to marry above her station because her mother died when a DR claimed to be out of town, but later that day she saw him entering the town of a wealthy family. She learns who she is after trying to manipulate everyone's life to suit her own and losing her best friend. This was a coming of age novel set in a time where it would work, semi-modern Romeo and Juliet...not really my thing :P