User blog comment:CheeseBurgerGuy/TDCYOA Island Edition: Episode 3 (The Big Sleep)/@comment-24623255-20191118205330/@comment-35606925-20191119033607

I decided it should be Sadie leaving over Katie for four reasons:

A) Honestly, either one of them could be accused and it wouldn't make a difference.

B) Considering Harold was the closest thing she had to an ally in canon after Sadie left, it made sense for Sadie to be the one to stand up for Duncan's bullying.

C) Between the two, I think Katie would be more open to a potential romance if you guys wanted to go down that path.

D) I like Sadie more than Katie, so if one of them had to go, it just made the most sense in the moment.