Percy noticed the frost and touched it with his fingers. He could probably melt it for her-- it'd be easy after breaking apart a glacier. Instead he turned his attention on her.

"Hey, relax. Breathe. I know how you're feeling. Not about the kingdom thing, but I want to be back home so I can be there when my sister is born. I bet a lot of people here have people they're worried about." He gave her what he hoped was an assuring squeeze of her shoulder.

"We'll find a way out. It may take a while, but we will."