Lily wasn't laughing. "If it would protect you then yes, I'll be right there on the front lines." She knew her twin was a capable fighter. However, Lily was more apt to take certain risks that Peter wouldn't consider. "Imagine being one of the first people who got here. Finding yourself back at Hogwarts willingly after already surviving everything we did." And sure, it might seem silly to hold out hope for their parents, but stranger things had happened.
Clinging to her twin for a moment, she took a deep breath. "If they come, you'll be the first person I tell. And then we can figure what to do about them, together. I don't want to be seen as little more than a tool to be used."
She was slightly surprised at the suggestion. "That's... actually a really good idea. And even if I don't end up taking a position with them, at least I'll have practiced my hexes, jinxes, and all that type of magic that we rarely use in our everyday lives."