You’re Nico’s sister, and you and Nico are arguing, because he, Percy, Annabeth, Jason, Leo, Hazel, Reyna, Piper, Nico, Will, and Frank figured out you were part siren, and that you’ve killed people with your song, and put Piper in a trance.

Nico’s also mad that you use your song on him whenever he came to your villa in a panic.