Image imported from derpibooru
Original Description:

This story is a sequel to Bad Colts Camp

Being a father isn’t always easy. Especially if you’re a single father. We know you try your best. But nopony is perfect and everypony makes mistakes. So what happens if, despite your best efforts, you end up with a naughty filly? It used to be something that you would just have to live with. Well fear not, fathers of Equestria!
Here at the Silly Filly Spa, we pride ourselves on our revolutionary, patent-pending, Second Start program, to help get your fillies back on the right path to being Daddy’s good little girl!

Cover Art: https://www.deviantart.com/natt333
All characters are adults.