Board Thread:General Discussion/@comment-5414004-20141116111720/@comment-4536113-20141116150645

Judgekoo wrote: IDK, from her being backstabbed by her own kind? In most dream interpretations the back symbolizes mostly betrayal and a little of overwhelming events in their life and too much pressure.

I like that theory! It makes sense since other Gems likely trapped her in the mirror, and also the Crystal Gems were going to keep her in the mirror.