Board Thread:General Discussion/@comment-4224349-20150305233453/@comment-26142953-20150308225642

Aclysmic wrote: She DID say "just picking up where we left off". That needs some speculation.

Okay, I think we can speculate that whoever is Peridot's superior is either lying to or withholding information about Earth from her.

It might be that Peridot is Pearl's replacement in the GDA, but unlike Pearl who knows the truth about kindergarten and about humanity, Peridot does not.