The smile on Aria's face disappeared instantly once she heard that she had to treat Swan with respect, "And why should I do that?"
"Because we told him that Swan is our first princess. What would you think would happen if he found out that we had been lying to his face the whole time? He might get angry and kill even more people, including us," Queen Anastasia said. Seeing that Aria was upset about having to act nice in front of Swan, she quickly added, "Don't worry, by the time he falls in love with you, I'm sure he will not do anything to harm us. It's only a matter of time until we can tell him the truth, especially about that whore's daughter."
Aria's expression eased once she realized she could kick Swan out of the picture the moment he fell in love.