Jenn is just 3 points behind Lindsay. When Sydney starts, the Oz rankings will have already been set. So she is basically guarenteed the no. 5 seed, but that's not the point....
Lindsay has points to defend in Sydney. 220 to be exact. If she doesn't at least make it to the final (at least) she's going to drop below Jen in time for Oz. But again, that will not change the seedings.
But at Oz, she has 4r points to defend. Jen has zero. This means that we just have to pray that Lindsay has a clear shot to the semis and that Jen loses in the 4r.
But on the other hand, Lindsay will win, so we don't have to worry!!!