There are some things that time cannot heal, some wounds that life won't let us forget. These are the scars that are bare for the world to see, and they are reminders that no matter how happy we once were, we are no longer. But still Rainbow Dash takes the trips that festers the wounds and opens the scars, because no matter how awful she feels, forgetting would be worse.

Prior to Season 3
Story five in my Twidash Challenge: Rainbow Tragedy Theme
Image credits go to Jykinturah

Once every couple of months Applejack takes a week away from the farm to deliver a large order of apples to Manehatten.

Coincidentally, Rarity is in Manehatten at the same time, showing off her new range of fashion accessories as part of Hoity Toities new summer line. At the opening night party she notices a very familiar looking pony among the crowd.
Could it really be Applejack? The Applejack who is so against "All that frilly froo froo stuff!"
Rarity is determined to find out.