This story is a sequel to Twilight Steals a Watch

After fleeing the scene of her own crime, Twilight finds herself in the middle of an entirely new one. A train robbery gone wrong results in Twilight receiving a little bit of payback for her crimes. But what of the Princesses? What will their consequences be?

The gore tag is only here as a warning about a couple of little bits, nothing too heavy I assure you.

I encourage you to read the prequel, however, it is not vital to enjoy this story.

If you don't want to read the prequel or need a refresher, here's the main rundown:
Twilight plans to steal a magical watch from a museum in Canterlot, she requisitions a stealth suit from Rarity while the CMC are out camping in Whitetail Woods, she successfully steals the watch after avoiding guards Cinder and Cleaver, the curator Shoddy Silver is devastated and is revealed to be a con artist after the launch of the museum is a failure, Twilight escapes onto a train commandeered by Celestia and Luna which soon derails off the mountain. Have I missed anything? Probably.