"That's... sort of the thing," Lexie says, pulling a face, apologetic. "No one knows. No one knows how we get here, either, just that we do. I've been here a year now. It's weird, but it's a good place, I promise." That more than anything seems important to emphasize. Other details can be dealt with later. For now, she wants Caroline to feel safe above all else. She just hopes she can manage it without making things worse.