Before Poniville, Twilight lived in Canterlot. That's mean that in human world, Twilight doesn't study in Canterlot High, in Crystal Prep. Human Twilight has only family, not friends. But maybe there will be other details in movie? For example, wherewhom does Pinkie Pie know about human Twilight in 1-st EG? Maybe Pinkie know some biography details of our purple one, isn't she?