The ghost in the attic disliked Gene.
When Fiona brought Gene home for Thanksgiving, the ghost kicked up a fuss: footsteps, banging… Gene missed a step coming downstairs and fell on his face. He complained that he heard whispering at dinner. That night, Gene woke up screaming and left before dawn. Fiona cried.
Then, it was quiet for days. Judging from the accusatory texts Fiona received, the ghost had followed Gene home.
I hadn’t liked Gene either, or at least, I’d wanted my sister to myself. I might’ve told the ghost a few things before Thanksgiving. It was for the best.