The heroine was told repeatedly by her mother and the hero that now she is a duchess and she could do as she pleases. So she is hosting a ball in honor of her two-week old marriage.
Themed parties were all the rage, but she couldn't settle on just one, so decided to use a few. The dishes would be Indian, the décor would be French, and the music would be performed by gypsies. And since Ian claimed that he liked her music, she decided to play a few pieces herself.
WORST. BALL. EVER.
Also, she was introduced to all the vampires in London at a meeting. They don't like her. I agree with the vampires.