Moonrise barked loudly, licked her paw, and pounded through the open door. She could smell another dog, that older one called Spike that sometimes came and talked to the humans, but she ignored him. She noticed a book and a pen lying on the floor. She did what all dogs do: chewed the pen for a bit, then left.
Then she came back in. She used her paw to lift the book. Somehow she could read the words almost perfectly.
...I don't say this often, because I don't like to, but.....I'm sorry. It was because I was angry at you, wasn't it? Dammit Sunset, I was just mad at you that one time! I don't hate you! You didn't have to go and kill yourself! ...
...Sunset? Sunset! Are you reading this? I hope you're reading this. I don't understand why you killed yourself. Did you actually kill yourself? Why would you do that, Sunset? I mean, I know you were upset before because you thought we were treating you differently, but that wasn't why, was it? Was it?...
...I just want to say that I'm sorry. I should have offered to take you back to Equestria after the incident during the Fall Formal. I should have known that the school wouldn't forgive you right away after you bullied them for so long and turned into a demon. I didn't realize humans weren't as forgiving as ponies. In Equestria they would be able to see that you really did want to change for the better...
Moonrise felt the tears coming out of her eyes. She didn't know why this was making her sad, but it was. It brought a sense of deja vu to her mind. She nuzzled the book closed and curled up on top of it to sleep.
* * *
The problem with life after death is that anyone who has been dead for long enough to see the afterlife is, well, dead. As such there have been many interpretations on what happens after you die. Some believe that you simply cease to be; some believe you go to Heaven or Hell; and some believe in reincarnation.
Reincarnation, to put it simply, is the idea that after you die, your soul gets to live on in someone else's body, with no memories of your past life. You might be reincarnated as another person, or maybe an animal, such as a dog.