You're Neon's younger sister, unlike her, your father doesn't pay you as much attention, because your ability isn't as efficient in the Mafia world. After Light Nostrade receives a proposal to unite two mafia families in marriage, he accepts and decides to offer you, as he believes you are more manipulable than Neon. You knew he wouldn't hear any complaints from him, and you had to accept it. Kurapika didn't agree either, but it would be a great excuse to infiltrate further in the black market.