What a relief!
The Logic 2 exam I did yesterday has been marked already. The lecturer realised that she made it "a bit too hard" (her words) so she juggled the scoring to compensate. The result is that I got 90%, much better than I expected (and the 4th highest score). For the essay, which has also been marked, I got 88% (the highest score) so it looks like I will be getting a High Distinction for this course after all. Yay!