The story has an ending (a good one in my oppinion) and the epiloge is just a forced extra ending to it that is completly unnecesarry and actually worse than the original.
The original is a wholesome but somewhat tragic ending while the epiloge wants to be the 'happy' ending and it just doest work well with the original tone of the story. Maybe if we had only the epiloge ending they I could accept it but right after the original ending it just makes it weird.
Its like when a cartoon or anime ends with a complete ending and after that they relese a movie after the originals time line with a new ending that just tries to make it more child friendly.
