Time travel is a curious thing. Starlight Glimmer tried to alter the past, but Twilight Sparkle and Spike were able to stop her. Because they stopped her and the past wasn't altered, there's no record of Starlight's actions to be found in any historical archive. It's as if the whole thing didn't even happen.

But not all ponies look at time from a linear perspective of cause and effect. Take Minuette, for instance. She wasn't part of Twilight's epic quest, but because of her special talent, she saw it all. All of the timelines starting and stopping; all of the heartbreaking futures; everything. She even knows what would've happened had Twilight failed to stop Starlight in the end (spoiler alert: it's not pretty).

With all the trauma affecting her at once, Minuette is not her normal, cheery self. Thankfully, she has a close friend who knows a thing or two about freaking out over such things.