She listens, a confused frown crossing her face as she tries to picture what Amethyst is talking about. Without even realizing it she's listening for something, anything that she can use to discredit what Amethyst is telling her, any detail that rings illogical enough that she can pick it apart and prove that Amethyst must have misunderstood the situation.

She can't find anything.

"That's-- No. Lapis wouldn't do that," Peridot insists, though it sounds more like she's trying to convince herself than she is Amethyst. "Even if she wanted to, I've always been able to talk her down! I would never just leave with her, that's ridiculous!"