I think this song is not only about 2 sisters, as it might seem, but it's about 2 great friends, who have a friendship this big that they do everything together. One day one of them made something by herself, and the other one is so angry with the first one, that she feels like in a house on fire. So she runs away from her friend, hoping for her to go back on her steps and apologize for what she made. In the end they are no longer friends :(
*I'm italian, I apologize for mistakes :)
I think this song is not only about 2 sisters, as it might seem, but it's about 2 great friends, who have a friendship this big that they do everything together. One day one of them made something by herself, and the other one is so angry with the first one, that she feels like in a house on fire. So she runs away from her friend, hoping for her to go back on her steps and apologize for what she made. In the end they are no longer friends :(