Was part 6 the last part of The Dark Mind? I was hoping for more and part six seemed too abbreviated to adequately close out the story.

It was the last chunk in that version, yes. I’m planning on writing a longer story along the same story/theme eventually, but the story was reaching the point where, either I cut it off a bit early, or it ends up three times as long. Normally that wouldn’t matter, of course, but this was a monthly patreon commission, and no story is helped by working on it little bits at a time over a year and a half.