What if MTL met his older counterparts?

The dragon tried to pull the bars of the cage back, with no such luck. The bars were platinum, the dragons' weakness. She had received a cell phone that only gets calls, doesn't make them. The dragon screamed, shooting flames out of her mouth in the process. Whoever put her in a platinum cage had a death wish. She flapped her wings in frustration. Her bright orange mane hung in her face. Her bright red eyes glowed in anger. The cell phone rang. She quickly dropped from the top bars of the cage and swiped up the phone. She hit the 'recieve' button and held it to her ear. "Hello?"
  "Chasidy....

What makes someone feel guilt? Do you feel it when you perform the act, or do you feel it when you realize that someone will find out? How do you feel when you think about if someone finds out? How do you feel when someone catches you right in the middle of the act?

When I was nine I killed people, I killed a lot of people. I was a rabid, mindless, predator. I fed off of the cold mountain water called revenge. But that still wasn’t my first kill. You’re not a killer if you don’t know what you’re doing. You’re not a killer if you accidentally take a life. I emptied a whole building...