Donna is currently #108, which will likely be the cut-off for the AO MD. She's losing 68 points from Lagos I and II, so to get back to #108 she needs to regain those 68 points. Today's win gives her 8, so 60 more to go.
As I understand it, points from Lagos 1 are coming off this week, which means that Donna could prevent losing anything on Monday by reaching the final in Seoul. But since she won't be playing next week, the next batch of 34 points (from Lagos 2) will come off a week from Monday.