Queen Chrysalis is a very busy monarch.
Not only is she going to expand her Hive's possibilities by signing a Cultural Exchange Treaty with Equestria, but she's also working on a duplicating spell that will allow her to create a perfect assistant for herself - which is, by the way, strictly forbidden and frowned upon by the Equestrians and in several other, supposedly civilized nations. So it's for the best that they wouldn't find out, right?
And just when you thought that Twilight Sparkle is the only magic user capable of casting a spell which 'accidentally' turns your world upside down... Chrysalis is there to prove that she is no worse.
Warning: please refrain yourself from reading the comments before the story, because spoilers!