Board Thread:General Discussion/@comment-4224349-20150205230904/@comment-26082492-20150218065505

Moonrabbit1 wrote: Lapis wasnt angry for them trapping her she was angry that the gems knew she was in the mirror and didnt set her free It's possible Lapis thought that since one of them trapped her in the mirror, the others knew what had happened.

Maybe not all of them knew, but I thought the most likely one was Pearl since she said this:  "How could've I known the gem contained in that mirror was that powerful?" If she really didn't know and neither did the others, then it could've been Rose who trapped her.