Evil Twilight Sparkle

I had this idea that was sort of a cross between Equestria Girls and Community Season 3: while pony Twilight Sparkle is visiting and having adventures with the girls, what happened to the human Twilight Sparkle who lives in the city and was mentioned by Pinkie Pie in the first Equestria Girls movie?  And from there the germ of the idea turned into a Twilight Sparkle who snapped when she somehow found out that her lifetime without friends could have been rectified, but not while the interloper from the pony dimension was still there!

I have no idea why I haven't been hired by Hasbro Studios yet.