Time changes everything. Unless Change itself does not care...
The years past and Applebloom discovered that getting no cutiemark was the least of her problems. How is she dealing with her fate.
(Now alternate reality thanks to the episode "The Raiders of the lost Cutiemark")

Why does everything the CMC is doing turn into a catastrophe?
Dinky get´s annoyed and letting them in a family secret, but even the family don´t know everything about it.

In the early morning Pinkie got a letter from home. Something happend to Maud on her way back home from the Grand Galloping Gala.

One day Sunset Shimmer writes a letter to Twilight using the book to tell her about things that happend to her recently.