Ayy, thank you! I'm glad you like it, that's really nice to hear :)
Alright, so, don’t worry about it, that puzzle is very open-ended! It is meant to be trialed and errored over and over. There also isn’t a clear-cut successful route, just a more impactful one that also reveals something about Mary once you return to the terrace in the present. That's all I can say here without spoiling it... but! Someone asked the same question on the weight gaming forum, so you can check my spoiler free answer there.
Let me know if you end up finding that bug again, I'm sure it's nothing that can't be fixed. To be perfectly honest, the whole terrace area is basically spaghetti code - I'm in awe that you've gone through all of those permutations and never encountered any game breaking bug along the way.