While trying to figure out how Twilight is so good at making friends out of foes, she discovers her methods were...ethically questionable. And then she tells Sunset about it and they both want a word with Twilight.
Sunny and Izzy seek out the legendary Twilight Sparkle on some advice on where to find Opaline and make a friend out of her the same way Twilight made friends out of foes in the past. They find out those foes didn't become friends willingly.
Despite her best efforts to maintain harmony, Celestia can't get the mortal ponies of Equestria to stop hating on each other for more than a millennium. So she's just burn everything.
Magic being drained from Equestria once again. Equestria on the brink of another civil war. And with her friends dead, is it any wonder Twilight is having a massive panic attack/mental collapse?
Today, I learnt why spying on Princess Cadence was a bad idea. Though, if you have a better idea on how to spend Hearts and Hooves Day, then by all means enlighten me.
Apparently, Celestia spent so much time training Twilight to wield the unlimited power of friendship, she had forgotten to teach her how to effectively run Equestria. Such as proposing a new tax policy.
Having both day and night duties can be very exhausting, especially when dealing with nightmares. Luckily, Twilight has a certain former guidance counsellor on hoof.