This is based on the fanfiction "Forever Faithful" (MLP) that you can listen to on youtube. I take no credit for this script, I am just rewriting it. I highly suggest you go listen to it. It is very good. Credit goes to the Author.

Princess Celestia starts to write a journal, documenting the strange letters that she has received from her student, Twilight Sparkle. Who died a year ago. Things go from bad to worse as she struggles to understand if somepony is playing a prank on her or Twilight really is becoming more and more powerful in the afterlife.