Board Thread:Episode Discussion/@comment-410526-20160109160106/@comment-10390252-20160110082709

There is one small possibility: Emerald dislikes Ruby a lot. It isn't beyond the bounds of possibility that she might pull a prank like this just to cause Ruby distress simply because Emerald hates how happy Ruby usually behaves. Petty and childish? Yes,but Emerald has shown those behaviour patterns on occasion.