Korora 
Let's keep calm here...
Pinkie's party planning mentor was the same Razzaroo Smallworld whom cultural historians would credit with helping repair the party planner profession's reputation, which had been sullied when the appalling (and grimdark) crimes and sheer chutzpah of Mirthful Cheer had come to light.
Nothing to do with cupcakes;that was some spiteful poison-pen equatinged Pinkie Pie with Sweeney Trot and Mrs. Hoovett from *Daring Do and the Staff of Star Swirl the Bearded*.
Nothing to do with cupcakes;