Pinkie foalsitting in a hospital.

The night after Fluttershy babysits the Cutie Mark Crusaders, Fluttershy remembers where she got her soothing lullaby. She remembers all the pain and sorrow she went through that night long ago but she will always remember the kindness she got from then. Oh! And if you aren't one for sadness do not read!

Princess Celestia, the proud ruler of Equestria, admired by thousands as the beautiful Princess of the Sun. But behind her majestic looks is a deep ocean of sorrow and regret. She remembers that day. The day the darkness within her sister begun