With Lord Business and Emmet's friends' being led away, Emmet stands perfectly still, his voice pathetically murmuring 'no' as he tries to force himself to believe that everything that did just happen didn't happen, and that it's all in his mind.
Piper thought that Reyna was the only demigod who hadn't changed much during their journey, and knew she had been through a lot of pain.
Piper and Annabeth later took a walk, where Annabeth told Piper about camp and being a demigod.
Piper understood that she didn't want to attract attention, after being a daughter of a movie star.
Piper was also the first person plus Hazel to find out about Annabeth's falling out with.
Once they finally reach there, they see the , and is guarding it.