Diamond Tiara was a big bully. There was no denying that. Not even Diamond herself was denying it, not anymore. After her reformation, she works hard to restore everypony's trust and hurt feelings, succeeding admirably. Everypony comes to accept her change as guenuine and they are satisfied with her efforts. But there is one pony she cannot satisfy...no matter how hard she tries.

Herself.

Unsure how to resolve her nagging feelings, she turns to the adult pony she's closest to, her dad.

Note: This contains spanking, so don't like, don't read.