I think there is a real possibility of them reaching the WTA finals. They are 8th in the race.
If they can keep in the top 8 by end of USO, they must be in a v strong place. Race quickly ramps down with just 7 or 8 weeks of action through to end October and then the Tour Finals at Indian Wells start on 8th November.
Good luck to them and fingers crossed they can hold on!