When some ponies look at the Bearer of an Element, the Element is all they see. Fluttershy surely has no choice but to be kind, every time, no matter what. A belief which encourages that kindness to be abused.
On the Day of Discord, many suffered. One mare suffered a silence beyond all else. The other suffered sound she couldn't bare. Isn't ironic one has been told and the other hasn't?
After another stunt gone wrong, Rainbow finds herself cooped up in a hospital room again. But when she ends up getting roomed with a nine-year-old colt, her stay at Ponyville General takes a turn she could have never seen coming.
Flitter thinks Fluttershy is the weakest pony in the world. Flitter has never confronted what Fluttershy's job really means. Nopony ever wants to or should. Now Flitter has to. And 'weak' will turn out to be exactly the wrong word.