Thanks a lot! That actually really helped! I found the bug and officially fixed it: just redownload the game to get the fix. Basically the game wasn't updating the display whenever one of the option slots disappeared
I wanted to let you know that Creaker worked fine after the update and I was able to get through its encounter! I also wanted to point out that after I downloaded the update, when I went to the main menu, it showed that I had beaten Cow when I hadn't yet. I had already talked with Cow a few times and answered a few questions successfully but never made it through the whole thing. If it's just something weird that happened with my copy, then I don't really care. I just wanted to draw your attention to it to make sure that everyone doesn't now start the game with Cow having been cleared.