Board Thread:Fun and Games/@comment-25559267-20150331163300/@comment-26021120-20150401203540

I think the best thing to assume is either Pearl is off doing derp-who knows what, she IS the monster (But unlikely because then she wouldn't be in the rest of the episodes unless she was healed, which would break the show's plot, or maybe sacrafice to heal?), or that the monster is either something close or personal to Pearl. Like, the first monster she defeated on her own, or something with Rose and her included.

It's possible to say that it could even be the first gem Pearl defeated. We don't know whether or not she is REALLY left out of the mission, or if it's just a lazy description. Until we get more hints, I think we're fine.