I think Katze was an NK kill. She was totally mislynchable if you were groupscum, based on her lackluster content and the fact her meta is almost indistinguishable between alignments unless she has voting patterns you’re able to analyze. I don’t think groupscum would aim there.
Or they couldn’t kill, which would implicate Possessed. Either way, I think the most likely scenario is that we’re in a Cult game and NK yeeted Katze.