Silver Spoon was Diamond Tiara's best friend and the two tormented the CMC when they were blank flanks. The CMC went on many crusades to find their special talents, and when they found them?
They went on many more crusades to help other pony's find their special talents. As for Diamond Tiara and Silver Spoon? With the CMC's help Diamond Tiara rediscovered her special talent and worked to be a better pony. And Silver Spoon? She started fading into the background.

And Discord? Well he decided to be a good samaritan and send Silver Spoon off on her own pokemon adventure.

Waking up to an explosion and a shower of cold water is not how most people start their day. Neither do people typically find themselves turned into pony/ship hybrids with a possibly unwanted sex change thrown on top for good measure. Nevertheless, our protagonist decides to ignore these issues until civilization is reached. And once that's done...who knows? After all one surely does not get naval guns with the intent that they not be used. And if, or when, they're used who will be on the wrong side of those barrels? One thing is for sure though, logic has clearly taken a vacation.