Just re-watched the last game.
-Coco goes down 15-30, but keeps it together and ends up with AD.
-Sabalenka hits a huge shot that just hits the baseline to put it back to Deuce. Coco easily could have crumbled there, but didn't.
-Sabalenka ends up going up and being AD and Coco faults on her first serve after that. Could have been very easy to just crumble there and possibly double fault, but she kept her composure, and won the last few points
If Coco keeps her composure and minimizes the unforced errors (both things are hard to do for her), she's extremely tough to beat.