Hey! Sorry to ping you again with another reply >.< I just wanted to let you know in case you hadn't seen, that Catherine managed to get the game working on Mac. I'll copy/paste what was written so you can see if it works for you, but it's possible it might not because you two are using different versions of macOS I think. Fingers crossed though :3
This is what Catherine said:
“So what I did was, I downloaded the Possible Black Screen Fix (Mac) file, did the 'Open Anyways' step, then executed the commands on https://apple.stackexchange.com/questions/408752/the-message-you-do-not-have-per...".
I did this too for the normal file previously and it hadn't worked, so I had low expectations, but strangely this time it worked!”