After leaving ponyville, Gilda's life was a wreck. She became mean, all her friends left her. She became alone, more mean, bitter to the core. She lost her job, became homeless, lost...Everything. She goes back to ponyville begging for forgiveness but no pony gives in. All except one special pony who teaches Gilda how to act, how to be, how to make friends.
The story is teen, but there are clop-chapters that I will mark with parenthesis.