Twilight Sparkle, the introvert, is afraid.

She's afraid that ponies are watching her.
She's afraid that ponies are judging her.

She just wants to be herself.

So she decides to hold back any emotion, thinking that it will solve her problems.

Only to discover that she was wrong; and now it's too late for her to say 'sorry'.

Derpy Hooves mistakenly finds something one day that just might change her life forever.

Based on a story I wrote when I was 9, original can be found Here