(first of all I would like to say that I am so, so sorry, please don’t hurt me) Just think… a demon eats reincarnated Mabel’s soul in a deal gone wrong, before Dipper can get there. The unlucky demon is ripped to shreds, but it’s all too late for Mabel. It’s quite a few hundred years before she’s reincarnated again and during that time, in the grief and the lack of the anchor closest to him, Dipper almost completely loses his humanity, and ends up doing some horrible, horrible things. (pt. 1)

(pt. 2) When she’s finally reincarnated again, his humanity comes rushing back joined with the full force guilt of what he did during that
time. That night one of the nurses at the hospital is shocked to find
the terrible demon Alcor hugging one of the newborn babies so close to
him, golden tears flowing from his eyes and his face contorted with
emotions unthinkable that a demon would feel. (again I am so sorry)(feel
free to tag with fic/fanart open season I would love to see anything
with this)