This is the final in the set of fics I published on deviantART a year ago.
It's AppleShy. One day, Fluttershy's friends all seem to dig into her and unload the pressure, causing a bit of a panic in the meek pegasus. Only Applejack seems ready to listen to her and let her go at her own pace, while encouraging her to stand up stronger.
Pretty straightforward shipping story, but the final chapter takes a more adventurous turn.