"Why, princess? Lyra has been with you for so long! If you want someone to imitate you than it must be her, right?" Luna tried to argue as she couldn't understand the reason behind choosing her over Lyra, who knows princess more than anyone.
"Luna, I know you are scared and worried that you might no go back to your world but that's not the case, you might learn about that magic stuff in the werewolf world than here! As you can see, we don't use or have any power but they only use power to do anything so you will find a way to get back to your world....." Luna interrupts her in frustration, saying, "I didn't even ask you about this! Why me and not Lyra?! Answer me and I will take the spot!".
Luna almost forgot about the werewolf and only focused on the princess who was steady once but now she is going around and talking irrevalent stuff to hide something. She felt like princess care so much about Lyra that she is asking Luna to be the sacrifice.